CN108776998A - A kind of lens of car light solar light focusing analog analysing method - Google Patents
A kind of lens of car light solar light focusing analog analysing method Download PDFInfo
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- CN108776998A CN108776998A CN201810424030.3A CN201810424030A CN108776998A CN 108776998 A CN108776998 A CN 108776998A CN 201810424030 A CN201810424030 A CN 201810424030A CN 108776998 A CN108776998 A CN 108776998A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The present invention discloses a kind of lens of car light solar light focusing analog analysing method, it includes：Lamps and lanterns 3D data models with lens are designed, the light-emitting surface of the vehicle body sheet metal and lampshade front in lens module, plastic components and lamp inner air and outer air domain and lamps and lanterns periphery is included；Geometric data pre-treatment work is carried out, retains had an impact calorifics and optical geometric data feature, while defining the surface treatment region of all components；For grid division after the independent size of mesh opening setting of all components progress, and mesh refinement is carried out to influencing calorifics and optical regional area；The grid data obtained in step 3 is imported into fluid emulation software, and analog parameter and governing equation are set, simulation result is obtained after being solved；Judge whether the lens perimeter component of the lamps and lanterns has the risk of ablation due to solar light focusing according to simulation result.The case where present invention can have found potential solar light focusing risk, prevent lamps and lanterns from failing to take preventive measures in advance at Design of Luminaires initial stage.
Description
Technical field
The invention belongs to car light simulation technical field, especially a kind of lens of car light solar light focusing analog analysing method,
Automobile lamp research and development field can be widely used in.
Background technology
Universal with automobile, automobile lamp plays very important role in terms of safe driving of vehicle, and lens
Lamps and lanterns are used due to the advantages that its light-gathering is good, penetration power is strong, road surface is clear by more and more vehicles.However, in lamps and lanterns
In process, it is found that there is ablation phenomen in the lamp lens circumferential component having, research has shown that, when automobile be parked in it is certain
Position and sunlight at an angle illuminating lamp when, sunray reflects and is reflected in parts or parts week through lens
Side, which is formed, to be focused, so as to cause temperature Centralized ablation component, finally so that lamps and lanterns failure.
Invention content
To solve that lens of car light solar light focusing leads to the ablation of lens perimeter plastic part and what cannot be taken preventive measures ask
Topic, the present invention provide a kind of lens of car light solar light focusing analog analysing method.
To achieve the above object, the present invention uses following technical proposals：
A kind of lens of car light solar light focusing analog analysing method, it includes the following steps：
Step 1, data creating：Design lamps and lanterns 3D data models with lens, including all lens modules, plastics
The light-emitting surface of component and the vehicle body sheet metal and lampshade front in lamp inner air and outer air domain and lamps and lanterns periphery；
Step 2, data processing：Geometric data pre-treatment work is carried out, had an impact calorifics and optical geometry number are retained
According to feature, while defining the surface treatment region of all components of lamps and lanterns；
Step 3, mesh generation：Grid division after independent size of mesh opening setting is carried out for all components of lamps and lanterns, and right
It influences calorifics and optical regional area carries out the refinement of grid；
The grid data obtained in step 3 is imported fluid emulation software, and analog parameter and control is arranged by step 4
Equation obtains simulation result after being solved；
Step 5 judges whether the lens perimeter component of the lamps and lanterns has ablation due to solar light focusing according to simulation result
Risk.
Further, the light source of the lens module in step 1 includes halogen light source, xenon light source and LED light source.
Further, the light-emitting surface in step 1 is fan-shaped curved surface or spherical surface；
When automobile is in different time, place, automobile lamp and sunray are there are one relative angle, the hair in step 1
Smooth surface is irradiated to different incidence angles on lamps and lanterns for simulated solar irradiation, and the area coverage of the light-emitting surface is more than the area of lampshade.
Further, 3D data creatings are carried out using CAD software in step 1；
In the step 2 3D data pre-processings are carried out using CAD software.
Further, CAD software CATIA, UG or other 3D modeling softwares.
Further, the trellis-type divided in step 3 is tetrahedron or hexahedral mesh.
Further, the mesh refinement in step 3 is to select smaller size of mesh opening.
Further, the fluid emulation software in step 4 is ANSYS Fluent or other fluid emulation softwares.
Further, the analog parameter in step 4 includes material, boundary condition and radiation patterns, is arranged in boundary condition
Different parameters are arranged in middle different surface treatment region.
Advantageous effect：
The present invention can design the potential solar light focusing risk of initial stage discovery in car light, and corresponding prevention is taken to arrange in advance
It applies, occurring serious problem after avoiding lamps and lanterns from producing causes to occur the case where failure, and guidance is designed with to automobile lamp
Property meaning.
Description of the drawings
Fig. 1 is the structure sectional view of the car light 3D data models of one embodiment of the invention；
Fig. 2 is the grid data illustraton of model of the 3D data models of Fig. 1；
In figure：1- gaskets, 2- light bulbs, 3- speculums, 4- shells, 5- holders, 6- automobile engine covers, 7- chromium plating panels,
8- lampshades, 9- lens, 10- decorative circles, 11- light-emitting surfaces, 12- bumpers.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
The present embodiment proposes that a kind of lens of car light solar light focusing analog analysing method, analog analysing method needs are having
Implement in the whole lamp data of lens module, the light source of lens module includes halogen light source, xenon light source and LED light source, design
Whole lamp 3D data models (Fig. 1) with lens, including lens module, plastic components and the air-shed of inside and outside, also lamps and lanterns
The vehicle body sheet metal on periphery and lampshade front are irradiated to for simulated solar irradiation with different incidence angles simulation luminous on lamps and lanterns
Face, CAD software select CATIA, UG or other 3D modeling software, fluid emulation choice of software ANSYS Fluent or other fluids
Simulation software；
Pre-treatment is carried out to lamp data, as shown in Figure 1, during simplified model, simulation is calculated without larger impact
Component area can simplify processing such as gasket 1, the fillet of shell 4 and lampshade 8, influence the component feature of optics and calorifics,
Such as the decorative circle 10 of light bulb 2, speculum 3, lens 9 and lens perimeter, to retain as possible, at the surface of the different zones of decorative circle 10
Science and engineering skill is also different, needs to distinguish in preceding processing；
The lamp data good to pre-treatment carries out mesh generation, and trellis-type could be provided as tetrahedron or hexahedron net
Lattice, size of mesh opening are considered as utmostly capturing feature when being arranged, and individual size of mesh opening is carried out for various sizes of component
Setting carries out the refinement of grid, as shown in Fig. 2, having part on lens 9 in the key area for influencing component optically and thermally
Region have the optical signature of very little, these small optical signatures influence the refractions and reflection of sunray in lens 9, need
Individually refined；Sunray after lens 9 reflect and reflect, can be generated by lampshade 8 near the decorative circle 10 on its periphery
Focal spot, therefore the grid of decorative circle 10 and lampshade 8 is also required to refine.Gasket 1, light bulb 2, speculum 3, shell 4, the holder of whole lamp
5, the mesh generation feelings of automobile engine cover 6, chromium plating panel 7, lampshade 8, lens 9, decorative circle 10, light-emitting surface 11 and bumper 12
Condition is as shown in Figure 2.
The mesh generation data obtained by above-mentioned steps are imported into fluid emulation software, and arrange parameter and governing equation,
It is solved to obtain simulation result.When boundary condition, radiation patterns and method for solving are arranged, boundary condition is needed according to surface
Definition is specifically distinguished, very such as the surface treatment difference in the positive plating aluminium zones of decorative circle 10 and the black dermatoglyph region at the back side
Greatly, so emissivity is different in parameter setting, the different material absorption co-efficient of transparency should also be distinguished；Radiation mode
The setting needs of type consider according to case type, accuracy requirement, calculation amount etc., and the radiation patterns that the present embodiment uses are
Monte Carlo Model；In method for solving, solver and discrete place should be reasonably selected according to calculating operating mode and trellis-type
Reason mode, the solver type that the present embodiment uses are SIMPLE, and convergence rate when which calculates is very fast and robustness
It is good.
In analog result post-processing, the temperature of plastic components, the factors such as amount of radiation of receiving, according to portion should be considered
The material properties and surface treatment mode of part itself come determine whether in the presence of failure risk, if 10 common used material of decorative circle is PC-
HT judges whether occur solar light focusing phenomenon in decorative circle 10 according to the amount of radiation received on material, while according to decorative circle
10 analog temperature is compared with its vicat temperature, if analog temperature is more than vicat temperature, decorative circle 10 exists because sunlight is poly-
Burnt and ablation failure risk.
Limiting the scope of the invention, those skilled in the art should understand that, in technical scheme of the present invention
On the basis of, the various modifications or variations that can be made by those skilled in the art with little creative work still the present invention's
Within protection domain.
Claims (9)
1. a kind of lens of car light solar light focusing analog analysing method, which is characterized in that it includes the following steps：
Step 1, data creating：Design lamps and lanterns 3D data models with lens, including all lens modules, plastic components
With the light-emitting surface of the vehicle body sheet metal and lampshade front in lamp inner air and outer air domain and lamps and lanterns periphery；
Step 2, data processing：Geometric data pre-treatment work is carried out, retains had an impact calorifics and optical geometric data is special
Sign, while defining the surface treatment region of all components of lamps and lanterns；
Step 3, mesh generation：For grid division after the independent size of mesh opening setting of all components progress of lamps and lanterns, and to influencing
Calorifics and optical regional area carry out the refinement of grid；
The grid data obtained in step 3 is imported fluid emulation software, and analog parameter and governing equation is arranged by step 4,
Simulation result is obtained after being solved；
Step 5 judges whether the lens perimeter component of the lamps and lanterns has the wind of ablation due to solar light focusing according to simulation result
Danger.
2. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 1
In the light source of lens module include halogen light source, xenon light source and LED light source.
3. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 1
In light-emitting surface be fan-shaped curved surface or spherical surface；
When automobile is in different time, place, automobile lamp and sunray are there are one relative angle, the hair in the step 1
Smooth surface is irradiated to different incidence angles on lamps and lanterns for simulated solar irradiation, and the area coverage of the light-emitting surface is more than the area of lampshade.
4. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 1
It is middle to carry out 3D data creatings using CAD software；
In the step 2 3D data pre-processings are carried out using CAD software.
5. lens of car light solar light focusing analog analysing method according to claim 4, which is characterized in that the CAD is soft
Part is CATIA, UG or other 3D modeling software.
6. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 3
The trellis-type of middle division is tetrahedron or hexahedral mesh.
7. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 3
In mesh refinement be to select smaller size of mesh opening.
8. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 4
In fluid emulation software be ANSYS Fluent or other fluid emulation softwares.
9. lens of car light solar light focusing analog analysing method according to claim 1, which is characterized in that the step 4
In analog parameter include material, boundary condition and radiation patterns, different surface treatment region is arranged in boundary condition setting
Different parameters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810424030.3A CN108776998B (en) | 2018-05-07 | 2018-05-07 | Sunlight focusing simulation analysis method for car lamp lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424030.3A CN108776998B (en) | 2018-05-07 | 2018-05-07 | Sunlight focusing simulation analysis method for car lamp lens |
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| CN108776998A true CN108776998A (en) | 2018-11-09 |
| CN108776998B CN108776998B (en) | 2022-06-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792986A (en) * | 2019-11-29 | 2020-02-14 | 芜湖安瑞光电有限公司 | Ablation-proof structure of automobile front combined lamp |
| CN113642152A (en) * | 2021-07-13 | 2021-11-12 | 东风汽车集团股份有限公司 | Simulation analysis system and analysis method for sunlight focusing of automobile headlamp |
| CN116975943A (en) * | 2023-09-25 | 2023-10-31 | 中山市达尔科光学有限公司 | Solar light focusing simulation analysis method for car lamp lens |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792986A (en) * | 2019-11-29 | 2020-02-14 | 芜湖安瑞光电有限公司 | Ablation-proof structure of automobile front combined lamp |
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| CN116975943A (en) * | 2023-09-25 | 2023-10-31 | 中山市达尔科光学有限公司 | Solar light focusing simulation analysis method for car lamp lens |
| CN116975943B (en) * | 2023-09-25 | 2023-12-26 | 中山市达尔科光学有限公司 | Solar light focusing simulation analysis method for car lamp lens |
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