CN113609576A - Vehicle door edge wrapping simulation method and device - Google Patents
Vehicle door edge wrapping simulation method and device Download PDFInfo
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Abstract
The invention relates to the field of computers, and discloses a vehicle door edge wrapping simulation method and device. The method comprises the following steps: importing the door assembly digital model into finite element analysis software to obtain a bound edge inner ring boundary line corresponding to the door assembly digital model; projecting the boundary line of the inner ring of the edge cover to the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line; projecting the boundary line of the inner ring of the edge cover to the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain a projection line of the outer plate; determining a target grid according to the inner plate projection line and the outer plate projection line; and determining the car door wrapping edge according to the target grid, importing a car door assembly digital model into finite element analysis software to obtain a corresponding wrapping edge inner ring boundary line, and obtaining a corresponding inner plate projection line and an outer plate projection line according to the projections of the inner ring boundary line on the inner plate and the outer plate, so that the target grid is determined, the car door wrapping edge is generated according to the target grid, and the modeling precision and efficiency of the car door wrapping edge in the finite element analysis software are improved.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a vehicle door edge wrapping simulation method and device.
Background
With the rise of the automobile industry, the design and development of vehicles through computers become the key point of work of a part of companies. The inner plate and the outer plate of the five-door one-cover of the automobile are connected and fixed through the edge covering process, and even some rigidity analysis indexes concern the deformation of the edge covering. The edge covering process is complex, the boundary of the edge covering CAE modeling is difficult to determine, the modeling is time-consuming, and the connection mode of the edge covering cannot be expressed really. In the prior art, modeling of edge covering design is usually designed by means of finite element software such as CAE, but errors are generated in operation of the finite element software, and high-precision edge covering cannot be designed truly, so that how to improve modeling precision of vehicle door edge covering in design of the finite element software becomes a technical problem to be solved urgently.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle door edge wrapping simulation method and a vehicle door edge wrapping simulation device, and aims to solve the technical problem that the prior art cannot improve the modeling precision of vehicle door edge wrapping in finite element analysis software.
In order to achieve the aim, the invention provides a vehicle door edge wrapping simulation method, which comprises the following steps:
importing the door assembly digital model into finite element analysis software to obtain a bound edge inner ring boundary line corresponding to the door assembly digital model;
projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
projecting the border line of the edge-covered inner ring onto the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line;
determining a target grid according to the inner plate projection line and the outer plate projection line;
and determining the edge of the vehicle door according to the target grid.
Optionally, the step of importing the door assembly digifax into finite element analysis software to obtain a border edge inner ring boundary line corresponding to the door assembly digifax includes:
importing a door assembly digital model into finite element analysis software, and extracting a middle surface of the door assembly digital model through the finite element analysis software to obtain a door middle surface;
and obtaining the boundary line of the inner ring of the covered edge corresponding to the door assembly digital model according to the middle surface of the door.
Optionally, the step of determining a target grid from the inner panel projection lines and the outer panel projection lines comprises:
generating a target middle surface according to the inner plate projection line and the outer plate projection line;
and determining a target grid according to the target middle plane.
Optionally, the step of determining the door trim according to the target grid includes:
selecting a target inner plate and a target outer plate in the middle surface of the vehicle door according to the target grid;
under a first preset condition, carrying out grid division processing on the target inner plate to obtain inner plate network external nodes;
under the first preset condition, carrying out mesh division processing on the target outer plate to obtain outer plate mesh external nodes;
and generating the vehicle door wrapping edge through the inner plate network outer row node and the outer plate network outer row node.
Optionally, after the step of generating a door trim by the inner panel network outer-row node and the outer panel network outer-row node, the method further includes:
obtaining an inner plate thickness value and an outer plate thickness value;
summing the inner plate thickness value and the outer plate thickness value to obtain a summation result;
and assigning the thickness corresponding to the vehicle door edge wrapping according to the summation result to obtain the vehicle door edge wrapping thickness.
In addition, to achieve the above object, the present invention also provides a door jamb simulation apparatus, comprising: the model loading module, the inner plate projection module, the outer plate projection module, the target grid module and the edge covering generation module;
the model loading module is used for importing the door assembly digifax into finite element analysis software to obtain a covered edge inner ring boundary line corresponding to the door assembly digifax;
the inner plate projection module is used for projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
the outer plate projection module is used for projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
the target grid module is used for determining a target grid according to the inner plate projection line and the outer plate projection line;
and the edge covering generation module is used for determining the edge covering of the vehicle door according to the target grid.
Optionally, the model loading module is further configured to import a door assembly digifax into finite element analysis software, extract a middle surface of the door assembly digifax through the finite element analysis software, obtain a door middle surface, and obtain an edge-covered inner ring boundary line corresponding to the door assembly digifax according to the door middle surface.
Optionally, the target grid module is further configured to generate a target middle plane according to the inner plate projection line and the outer plate projection line, and determine a target grid according to the target middle plane.
Optionally, the hemming generation module is further configured to select a target inner plate and a target outer plate in the middle surface of the vehicle door according to the target grid, perform grid division processing on the target inner plate under a first preset condition to obtain inner plate network external nodes, perform grid division processing on the target outer plate under the first preset condition to obtain outer plate network external nodes, and generate the vehicle door hemming through the inner plate network external nodes and the outer plate network external nodes.
Optionally, the hemming generation module is further configured to obtain an inner plate thickness value and an outer plate thickness value, sum the inner plate thickness value and the outer plate thickness value to obtain a summation result, and assign a value to the thickness corresponding to the vehicle door hemming according to the summation result to obtain the vehicle door hemming thickness.
The invention discloses a vehicle door edge wrapping simulation method and device. The method comprises the following steps: importing the door assembly digital model into finite element analysis software to obtain a bound edge inner ring boundary line corresponding to the door assembly digital model; projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line; projecting the border line of the edge-covered inner ring onto the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line; determining a target grid according to the inner plate projection line and the outer plate projection line; and determining the car door wrapping edge according to the target grid, importing a car door assembly digital model into finite element analysis software to obtain a corresponding wrapping edge inner ring boundary line, and obtaining a corresponding inner plate projection line and an outer plate projection line according to the projections of the inner ring boundary line on the inner plate and the outer plate, so that the target grid is determined, the car door wrapping edge is generated according to the target grid, and the modeling precision and efficiency of the car door wrapping edge in the finite element analysis software are improved.
Drawings
FIG. 1 is a schematic structural diagram of a door edge wrapping simulation device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a vehicle door hemming simulation method according to the present invention;
FIG. 3 is a schematic diagram of an inner circle boundary line in the first embodiment of the door trim simulation method of the present invention;
FIG. 4 is a schematic view of an inner panel projection line in a first embodiment of a door trim simulation method according to the present invention;
FIG. 5 is a schematic view of an outer panel projection line in the first embodiment of the door trim simulation method according to the present invention;
FIG. 6 is a schematic view of the door trim simulation method according to the present invention, in which the bent trim of the outer panel is removed;
FIG. 7 is a schematic diagram of a middle plane of an area enclosed by an outer boundary of an inner panel and a projection line of the inner panel deleted in the first embodiment of the door trim simulation method of the present invention;
FIG. 8 is a schematic view of door trim in a first embodiment of a door trim simulation method according to the present invention;
FIG. 9 is a schematic diagram of inner and outer panel grid division in a first embodiment of a door hemming simulation method of the present invention;
FIG. 10 is a schematic diagram of an inside and outside panel outside grid node selected in the first embodiment of the door edge wrapping simulation method of the present invention;
FIG. 11 is a schematic diagram of wrapping grid generation in the first embodiment of the door wrapping simulation method of the present invention;
FIG. 12 is a schematic flow chart of a door trim simulation method according to a second embodiment of the present invention;
fig. 13 is a block diagram showing the structure of the door trim simulating apparatus according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a door edge wrapping simulation device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the door trim simulating apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in FIG. 1 does not constitute a limitation of the door trim simulating apparatus and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a door trim simulation program.
In the door trim simulation apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the vehicle door edge-covering simulation device of the present invention may be disposed in the vehicle door edge-covering simulation device, and the vehicle door edge-covering simulation device calls the vehicle door edge-covering simulation program stored in the memory 1005 through the processor 1001 and executes the vehicle door edge-covering simulation method provided by the embodiment of the present invention.
The embodiment of the invention provides a vehicle door edge wrapping simulation method, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the vehicle door edge wrapping simulation method.
In this embodiment, the vehicle door wrapping simulation method includes the following steps:
step S10: and importing the door assembly digital model into finite element analysis software to obtain an edge-covered inner ring boundary line corresponding to the door assembly digital model.
It should be noted that a door (car door) is a passage for a driver and a passenger to enter and exit the vehicle, and isolates external disturbances, thereby reducing side impact to some extent and protecting the passenger. The aesthetic appearance of a car is also related to the styling of the doors. The quality of the vehicle door is mainly reflected by the anti-collision performance of the vehicle door, the sealing performance of the vehicle door, the opening and closing convenience of the vehicle door, and other indexes of use functions and the like. The anti-collision performance is particularly important because the buffer distance is short when the vehicle is subjected to side collision, and people in the vehicle can be easily injured.
It is understood that the finite element analysis software refers to corresponding software for designing and calculating a door model, such as: the CAE (computer Aided engineering) refers to the computer Aided engineering in engineering design, and refers to the analysis of the structural mechanical properties of complex engineering and products by computer Aided solution, and the optimization of structural properties, etc., and all the links of engineering (production) are organically organized, and its key is to integrate the related information, so that it can be produced and existed in the whole life cycle of engineering (products). The CAE software can be used for static structure analysis and dynamic analysis; researching linear and nonlinear problems; analytical structures (solid), fluid, electromagnetic, etc.
It should be noted that the door assembly digital Model refers to a Data Model corresponding to a door, and the Data Model (Data Model) is an abstraction of Data characteristics, and describes static characteristics, dynamic behaviors and constraint conditions of the system from an abstraction level, so as to provide an abstract framework for information representation and operation of a database system. The data model describes three parts, namely a data structure, a data operation and a data constraint.
It is understood that the inner-circle boundary line is a closed curve as shown in fig. 3.
Further, in order to obtain the inner circle boundary line more accurately, the step of importing the door assembly digifax into the virtual software to obtain the edge-covered inner circle boundary line corresponding to the door assembly digifax includes: importing a door assembly digital model into finite element analysis software, and extracting a middle surface of the door assembly digital model through the finite element analysis software to obtain a door middle surface; and obtaining the boundary line of the inner ring of the covered edge corresponding to the door assembly digital model according to the middle surface of the door.
Step S20: and projecting the boundary line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line.
Note that the projection line of the inner panel shown in fig. 4 is a projection line generated by projecting the hemming inner ring boundary line onto the middle surface of the inner panel.
In a specific implementation, the projecting the edge-covered inner ring boundary line to the extracted inner plate middle surface in the door assembly digifax to obtain an inner plate projection line is performed by firstly extracting the middle surface corresponding to the door assembly digifax in corresponding finite element software to obtain a corresponding inner plate middle surface, after obtaining the inner plate middle surface, projecting the corresponding inner ring boundary line on the inner plate middle surface, and obtaining the inner plate projection line through projection.
Step S30: and projecting the boundary line of the edge-covered inner ring onto the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line.
Note that the outer panel projection line shown in fig. 5 is a projection line generated by projecting the edge-covered inner circle boundary line onto the outer panel middle surface.
In a specific implementation, the step of projecting the edge-covered inner ring boundary line onto the outer panel middle surface extracted from the door assembly digifax to obtain the outer panel projection is to extract the middle surface of the door assembly digifax in corresponding finite element software to obtain the outer panel middle surface, and project the outer panel middle surface according to the inner ring boundary line.
Step S40: and determining a target grid according to the inner plate projection line and the outer plate projection line.
Further, in order to be more accurate in generating the door trim, the step of determining the target grid according to the inner panel projection line and the outer panel projection line includes: generating a target middle surface according to the inner plate projection line and the outer plate projection line; and determining a target grid according to the target middle plane.
In the specific implementation, after the step of projecting the selected circle of boundary lines onto the inner panel and the outer panel simultaneously to obtain the inner panel projection line and the outer panel projection line, the operation steps of deleting the middle surface of the bent edge of the outer panel as shown in fig. 6 and deleting the middle surface of the area enclosed by the outer boundary of the inner panel and the inner panel projection line as shown in fig. 7 are also performed.
Step S50: and determining the edge of the vehicle door according to the target grid.
It should be noted that, the overlapping refers to the case material with four edges folded back along the edges of the case paper board and wrapped around the portion adhered to the paper board, and one (or more) edge is wrapped around the edge, and a pull-up cylinder is generally used.
It can be understood that the door trim has the technical effect as shown in fig. 8.
In a specific implementation, as shown in fig. 9, fig. 9 shows an equal number of grids drawn on the inner and outer panels. And the step of determining the edge of the car door according to the target grids is that the middle surfaces of the boundaries with the same length of the inner plate and the outer plate are simultaneously selected, and the number of the divided grids is the same. Fig. 10 shows a row of selected mesh nodes on the outer boundary of the inner plate mesh and a row of selected mesh nodes on the outer boundary of the outer plate mesh, and a row of meshes, namely, a wrapped mesh shown in fig. 11 is generated through the two rows of selected nodes.
According to the embodiment, the border edge inner ring boundary line corresponding to the door assembly digital model is obtained by importing the door assembly digital model into finite element analysis software; projecting the boundary line of the inner ring of the edge cover to the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line; projecting the boundary line of the inner ring of the edge cover to the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain a projection line of the outer plate; determining a target grid according to the inner plate projection line and the outer plate projection line; and determining the car door wrapping edge according to the target grid, importing a car door assembly digital model into finite element analysis software to obtain a corresponding wrapping edge inner ring boundary line, and obtaining a corresponding inner plate projection line and an outer plate projection line according to the projections of the inner ring boundary line on the inner plate and the outer plate, so that the target grid is determined, the car door wrapping edge is generated according to the target grid, and the modeling precision and efficiency of the car door wrapping edge in the finite element analysis software are improved.
Referring to fig. 12, fig. 12 is a schematic flow chart of a door trim simulation method according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S50 includes:
step S501: and selecting a target inner plate and a target outer plate in the middle surface of the vehicle door according to the target grid.
The vehicle door middle plane is a vehicle door plane obtained after an assembly digital-analog is subjected to surface extraction in finite element software.
It is understood that the target grid refers to the target grid location set by the system to extract the door midplane.
In a specific implementation, when the target inner plate and the target outer plate are selected according to the target grids in the vehicle door middle surface, the number of the divided grids is consistent by selecting the boundary middle surfaces with the same length of the inner plate and the outer plate.
Step S502: and under a first preset condition, carrying out grid division processing on the target inner plate to obtain inner plate network exclusion nodes.
It should be noted that the first preset condition refers to that the selected grid division condition is a preset number, the first preset condition is set by an administrator in the background, and the more the set grid number is, the more the corresponding accuracy of the edge-covering modeling is, and the more computer resources are consumed at the same time.
In a specific implementation, the mesh partitioning processing is performed on the target inner plate under a first preset condition, the first preset condition is read in a system background when an outer-row node of the inner plate network is obtained, the mesh partitioning processing is performed on the target inner plate according to the first preset condition, and when it is detected that the number of the inner plate mesh nodes subjected to the mesh partitioning processing is consistent with the number corresponding to the first preset condition, it is determined that an inner plate mesh node is generated.
Step S503: and under the first preset condition, carrying out mesh division processing on the target outer plate to obtain outer plate mesh external nodes.
In a specific implementation, the mesh division processing is performed on the target outer panel under a first preset condition, the first preset condition is read in a system background when an outer panel mesh discharge node is obtained, the mesh division processing is performed on the target outer panel according to the first preset condition, and when the mesh nodes of the divided outer panel are detected to be consistent with the corresponding number under the first preset condition, generation of the mesh nodes of the outer panel is confirmed.
Step S504: and generating the vehicle door wrapping edge through the inner plate network outer row node and the outer plate network outer row node.
It should be noted that the inner and outer panels of the five-door one-cover of the automobile are connected and fixed through the edge covering process, and even some rigidity analysis indexes concern the deformation of the edge covering. Therefore, in the finite element simulation of the rigidity and the strength of the vehicle door, the finite element modeling and the calculation method of the edge wrapping play a key role.
It can be understood that the hemming process is complex, the border of the hemming CAE modeling is difficult to determine, the modeling is time-consuming, and the hemming connection mode cannot be expressed really.
In a specific implementation, the step of generating the door trim through the inner panel grid nodes and the outer panel grid nodes means that an area generated through the inner panel grid nodes and the outer panel grid nodes is a range of the door trim.
Further, after the step of generating the door trim by the inner panel network outer row node and the outer panel network outer row node in order to obtain the corresponding thickness parameter after the step of completing the trim simulation modeling, the method further includes: obtaining an inner plate thickness value and an outer plate thickness value; summing the inner plate thickness value and the outer plate thickness value to obtain a summation result; and assigning the thickness corresponding to the vehicle door edge wrapping according to the summation result to obtain the vehicle door edge wrapping thickness.
The thickness is a distance between the upper and lower surfaces of a flat object.
It can be understood that the inner panel thickness value and the outer panel thickness value are extracted from corresponding parameters of the door assembly digifax, and belong to objective parameter attributes.
In a specific implementation, the inner plate thickness value and the outer plate thickness value are obtained; summing the inner plate thickness value and the outer plate thickness value to obtain a summation result; when the summation result is used for assigning the thickness corresponding to the vehicle door edge so as to obtain the vehicle door edge thickness, the thickness of the inner plate and the thickness of the outer plate are calculated according to a thickness calculation formula so as to obtain a thickness result, for example: after corresponding data are obtained through an assembly digital-analog, the current inner plate thickness is determined to be 30mm, the outer plate thickness is determined to be 42mm, T-T1 + T2 (T is the wrapping thickness, T1 is the inner plate thickness, and T2 is the outer plate thickness) can be determined according to a wrapping thickness calculation formula, the corresponding wrapping thickness can be obtained to be 72mm, and 72mm is used as a summation result to assign a parameter value corresponding to the wrapping thickness in the system.
In the embodiment, a target inner plate and a target outer plate are selected from the middle surface of the vehicle door according to the target grid; under a first preset condition, carrying out grid division processing on the target inner plate to obtain inner plate network external nodes; under the first preset condition, carrying out mesh division processing on the target outer plate to obtain outer plate mesh external nodes; the method comprises the steps of generating a vehicle door wrapping edge through an inner plate network outer row node and an outer plate grid outer row node, selecting a target inner plate and a target outer plate through a vehicle door middle surface according to a target grid, processing the target inner plate and the target outer plate under a first preset condition to obtain a processed inner plate network node and a processed outer plate network node, generating the vehicle door wrapping edge through the inner plate network node and the outer plate network node, avoiding the problem of poor precision in a vehicle door wrapping simulation modeling process, and achieving the technical effect of accurately modeling the vehicle door wrapping edge by cutting the target inner plate and the target outer plate at equal intervals through the first preset condition.
Referring to fig. 13, fig. 13 is a block diagram showing a structure of a door trim simulating apparatus according to a first embodiment of the present invention.
As shown in fig. 13, the door trim simulation apparatus according to the embodiment of the present invention includes:
the model loading module 10 is used for importing the door assembly digital model into finite element analysis software to obtain a covered edge inner ring boundary line corresponding to the door assembly digital model;
the inner plate projection module 20 is used for projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
the outer plate projection module 30 is used for projecting the border line of the edge-covered inner ring onto the middle surface of an outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line;
a target mesh module 40 for determining a target mesh from the inner panel projection line and the outer panel projection line;
and the edge covering generation module 50 is used for determining the edge covering of the vehicle door according to the target grid.
According to the embodiment, the border edge inner ring boundary line corresponding to the door assembly digital model is obtained by importing the door assembly digital model into finite element analysis software; projecting the boundary line of the inner ring of the edge cover to the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line; projecting the boundary line of the inner ring of the edge cover to the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain a projection line of the outer plate; determining a target grid according to the inner plate projection line and the outer plate projection line; and determining the car door wrapping edge according to the target grid, importing a car door assembly digital model into finite element analysis software to obtain a corresponding wrapping edge inner ring boundary line, and obtaining a corresponding inner plate projection line and an outer plate projection line according to the projections of the inner ring boundary line on the inner plate and the outer plate, so that the target grid is determined, the car door wrapping edge is generated according to the target grid, and the modeling precision and efficiency of the car door wrapping edge in the finite element analysis software are improved.
In an embodiment, the model loading module 401 is further configured to import a door assembly digital model into finite element analysis software, and extract a central plane of the door assembly digital model through the finite element analysis software to obtain a door central plane; and obtaining the boundary line of the inner ring of the covered edge corresponding to the door assembly digital model according to the middle surface of the door.
In an embodiment, the target mesh module 404 is further configured to generate a target mid-plane from the inner plate projection lines and the outer plate projection lines; and determining a target grid according to the target middle plane.
In an embodiment, the target grid module 404 is further configured to select a target inner panel and a target outer panel in the vehicle door middle panel according to the target grid; under a first preset condition, carrying out grid division processing on the target inner plate to obtain inner plate network external nodes; under the first preset condition, carrying out mesh division processing on the target outer plate to obtain outer plate mesh external nodes; and generating the vehicle door wrapping edge through the inner plate network outer row node and the outer plate network outer row node.
In an embodiment, the target grid module 404 is further configured to obtain an inner plate thickness value and an outer plate thickness value; summing the inner plate thickness value and the outer plate thickness value to obtain a summation result; and assigning the thickness corresponding to the vehicle door edge wrapping according to the summation result to obtain the vehicle door edge wrapping thickness.
Other embodiments or specific implementation manners of the vehicle door edge wrapping simulation device can refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle door edge wrapping simulation method is characterized by comprising the following steps:
importing the door assembly digital model into finite element analysis software to obtain a bound edge inner ring boundary line corresponding to the door assembly digital model;
projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
projecting the border line of the edge-covered inner ring onto the middle surface of the outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line;
determining a target grid according to the inner plate projection line and the outer plate projection line;
and determining the edge of the vehicle door according to the target grid.
2. The method of claim 1, wherein the step of importing a door assembly numerical model into finite element analysis software to obtain a covered edge inner circle boundary line corresponding to the door assembly numerical model comprises:
importing a door assembly digital model into finite element analysis software, and extracting a middle surface of the door assembly digital model through the finite element analysis software to obtain a door middle surface;
and obtaining the boundary line of the inner ring of the covered edge corresponding to the door assembly digital model according to the middle surface of the door.
3. The method of claim 1, wherein the step of determining a target grid from the inner panel projection lines and the outer panel projection lines comprises:
generating a target middle surface according to the inner plate projection line and the outer plate projection line;
and determining a target grid according to the target middle plane.
4. A method according to any one of claims 1 to 3, wherein the step of determining a door trim from the target grid comprises:
selecting a target inner plate and a target outer plate in the middle surface of the vehicle door according to the target grid;
under a first preset condition, carrying out grid division processing on the target inner plate to obtain inner plate network external nodes;
under the first preset condition, carrying out mesh division processing on the target outer plate to obtain outer plate mesh external nodes;
and generating the vehicle door wrapping edge through the inner plate network outer row node and the outer plate network outer row node.
5. The method of claim 4, wherein after the step of generating a door trim by the inner panel network outer row node and the outer panel mesh outer row node, further comprising:
obtaining an inner plate thickness value and an outer plate thickness value;
summing the inner plate thickness value and the outer plate thickness value to obtain a summation result;
and assigning the thickness corresponding to the vehicle door edge wrapping according to the summation result to obtain the vehicle door edge wrapping thickness.
6. A vehicle door edge wrapping simulation device is characterized by comprising: the model loading module, the inner plate projection module, the outer plate projection module, the target grid module and the edge covering generation module;
the model loading module is used for importing the door assembly digifax into finite element analysis software to obtain a covered edge inner ring boundary line corresponding to the door assembly digifax;
the inner plate projection module is used for projecting the border line of the edge-covered inner ring onto the middle surface of the inner plate extracted from the digital analogy of the vehicle door assembly to obtain an inner plate projection line;
the outer plate projection module is used for projecting the border line of the edge-covered inner ring onto the middle surface of an outer plate extracted from the digital analogy of the vehicle door assembly to obtain an outer plate projection line;
the target grid module is used for determining a target grid according to the inner plate projection line and the outer plate projection line;
and the edge covering generation module is used for determining the edge covering of the vehicle door according to the target grid.
7. The vehicle door edge wrapping simulation device according to claim 6, wherein the model loading module is further configured to import a vehicle door assembly numerical model into finite element analysis software, extract a middle surface of the vehicle door assembly numerical model through the finite element analysis software, obtain a vehicle door middle surface, and obtain an edge wrapping inner ring boundary line corresponding to the vehicle door assembly numerical model according to the vehicle door middle surface.
8. The door trim simulation apparatus of claim 7, wherein the target grid module is further configured to generate a target mid-plane from the inner panel projection line and the outer panel projection line, and determine a target grid from the target mid-plane.
9. The vehicle door trim simulation device according to any one of claims 6 to 8, wherein the trim generation module is further configured to select a target inner panel and a target outer panel in the vehicle door middle surface according to the target mesh, perform mesh division processing on the target inner panel under a first preset condition to obtain an inner panel network outer discharge node, perform mesh division processing on the target outer panel under the first preset condition to obtain an outer panel mesh outer discharge node, and generate the vehicle door trim through the inner panel network outer discharge node and the outer panel mesh outer discharge node.
10. The vehicle door trim simulation device according to claim 9, wherein the trim generation module is further configured to obtain an inner plate thickness value and an outer plate thickness value, sum the inner plate thickness value and the outer plate thickness value to obtain a summation result, and assign a value to a thickness corresponding to the vehicle door trim according to the summation result to obtain the vehicle door trim thickness.
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