CN114509227A - Method for measuring collision deformation of simulation falling object of underwater Christmas tree - Google Patents
Method for measuring collision deformation of simulation falling object of underwater Christmas tree Download PDFInfo
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- CN114509227A CN114509227A CN202111629558.2A CN202111629558A CN114509227A CN 114509227 A CN114509227 A CN 114509227A CN 202111629558 A CN202111629558 A CN 202111629558A CN 114509227 A CN114509227 A CN 114509227A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
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- 238000002474 experimental method Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
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- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses a method for measuring the impact deformation of an underwater Christmas tree simulating falling object, which comprises the following steps: s1: placing the falling object on a forklift, attaching a connecting strain gauge to the measured part of the Christmas tree model, and electrically connecting the strain gauge, the dynamic strain gauge, the oscilloscope and the computer in sequence; s2: starting the testing device and adjusting the oscilloscope to a state to be tested; s3: adjusting the height and angle of the forklift, releasing the falling object, and enabling the falling object to fall and impact the measured part of the Christmas tree model; s4: and reading the test result through the test device. The invention has simple steps, convenient operation and repeated use of the falling object, can read dynamic impact parameters through a test instrument, and can effectively test the damage effect of accidental impact on underwater equipment, thereby being suitable for popularization and use.
Description
Technical Field
The invention relates to the field of structural damage analysis of underwater production equipment, in particular to a method for measuring the impact deformation of a falling object simulated by an underwater Christmas tree.
Background
The underwater Christmas tree is used as important equipment of an underwater production system, and the safe and reliable structure of the underwater Christmas tree is a foundation for ensuring the normal working and operation of the whole equipment. As the underwater robot is placed underwater for a long time, the working environment is complex, once the underwater robot suffers from third-party load, the structure is damaged, and immeasurable environmental pollution and economic loss are brought. Therefore, it is necessary to analyze structural damage caused by the collision of a falling object on the subsea tree.
At present, research on the underwater Christmas tree also focuses on research on the internal structure and the valve of the Christmas tree, and no effective test and analysis method is available at home and abroad for structural damage caused by accidental impact on the underwater Christmas tree.
Disclosure of Invention
The invention aims to provide a method for measuring the deformation of the impacted part of a Christmas tree when a falling object is simulated to impact the Christmas tree under water.
In order to solve the technical problem, the invention provides a method for measuring the impact deformation of an underwater Christmas tree simulating falling object, which comprises the following steps:
s1: placing the falling object on a forklift, attaching a connecting strain gauge to the measured part of the Christmas tree model, and electrically connecting the strain gauge, the dynamic strain gauge, the oscilloscope and the computer in sequence;
s2: starting the testing device and adjusting the oscilloscope to a state to be tested;
s3: adjusting the height and angle of the forklift, releasing the falling object, and enabling the falling object to fall and impact the measured part of the Christmas tree model;
s4: and reading the test result through the test device.
According to a preferred embodiment of the present invention, in step S1, the measured portions of the christmas tree model are an object falling prevention cap, an i-steel, a tree body and a control panel, the object falling prevention cap and the i-steel should be respectively attached with and connected to a triaxial strain gauge, and the tree body and the control panel should be respectively attached with and connected to a biaxial strain gauge.
According to a preferred embodiment of the present invention, in step S1, the surface of the measured portion of the christmas tree model should be polished.
According to a preferred embodiment of the present invention, in step S1, the strain gauge is connected to the dynamic strain gauge through a bridge, the dynamic strain gauge is connected to an oscilloscope through a transmission line, and the oscilloscope is connected to a computer through a data line.
According to a preferred embodiment of the present invention, in step S2, after the test instrument is started, the measured portion of the christmas tree should be pressed, whether the waveform on the oscilloscope changes or not is observed, whether the strain gauge is attached or not or the connection is not tight is detected, and the correction is performed.
According to a preferred embodiment of the present invention, in the step S3, the drop should be freely released from the top end of the forklift.
According to a preferred embodiment of the present invention, in step S3, the height and angle of the forklift should be adjusted multiple times for testing.
According to a preferred embodiment of the present invention, in the step S4, after the test result is read, the test result is recorded to obtain the voltage value measured each time the voltage value measured during the crash of the christmas tree model reaches the peak value and the voltage change values at both sides of the peak value.
According to a preferred embodiment of the present invention, in step S1, the forklift is provided with a lifting device and a plurality of angle adjusting devices, the lifting device is slidably connected to one side of the forklift, and the angle adjusting devices are uniformly distributed in the vertical direction of the lifting device.
According to a preferred embodiment of the invention, the forklift is further provided with a V-shaped guide rail, one end of the V-shaped guide rail is placed on the edge of the lifting device in the horizontal direction, and the other end of the V-shaped guide rail is placed on the angle adjusting device.
The invention has the technical effects that:
1. the method utilizes the iron ball to simulate falling objects in real life, utilizes the Christmas tree model to simulate the underwater Christmas tree, attaches the strain gauge on the surface of the measured part of the Christmas tree model, the strain gauge simulates the strain generated in the impact process, and uses the measuring device to measure the strain generated in the measured part, thereby conjecturing and analyzing the deformation of the underwater Christmas tree when the underwater Christmas tree receives the impact of the falling objects.
2. The experimental method provided by the invention can simply, conveniently and efficiently evaluate the structural damage caused by the collision of the falling object of the underwater Christmas tree. The method provides an experimental scheme and an analysis method for the structural damage analysis of the underwater Christmas tree, and the experimental scheme and the analysis method are also suitable for other underwater equipment.
3. The measuring method provided by the invention has the advantages of simple steps and convenience in operation, the falling objects can be reused, and the strain and stress caused to the falling object preventing cap, the I-steel, the tree body and the control panel of the Christmas tree when 20kg, 30kg and 50kg of falling objects impact the Christmas tree model along different heights and angles can be effectively tested within 0.02s, so that the corresponding damage result can be analyzed.
4. The dynamic strain gauge adopted by the invention has small volume, light weight, convenient carrying and carrying, automatic balance function, 2, 4, 6 and 8 channels which can be freely combined, and can meet different strain gauge pasting schemes. The direct current supply bridge is adopted, the electric bridge adopts a six-wire system, and the long wire compensation function is realized, so that the interference can be effectively eliminated, and the experimental error is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a method for measuring the impact deformation of a falling object simulated by an underwater Christmas tree according to the invention;
FIG. 2 is a schematic diagram of a triaxial strain gauge strain calculation of a method for measuring the impact deformation of an underwater Christmas tree simulating falling object according to the invention;
FIG. 3 is a graph showing the change of the collision strain of the falling object preventing cap of the subsea tree in the method for measuring the collision deformation of the falling object by simulating the falling object of the subsea tree.
Reference numerals: 1-a lifting device; 2-V type guide rail; 3-falling object; 4-angle adjusting means; 5-Christmas tree model; 6-falling object prevention cap; 7-a control panel; 8-I-steel; 9-a dynamic strain gauge; 10-an oscilloscope; 11-a computer; 12-fork truck.
Detailed Description
The present invention is further described below in conjunction with the drawings and the embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1, the experimental device for simulating impact of the underwater christmas tree used in the invention comprises a forklift 12, a V-shaped guide rail 2, a falling object 3, a christmas tree model 5, a dynamic strain gauge 9, an oscilloscope 10, a computer 11, a lifting device 1 and an angle adjusting device 4, wherein the lifting device 1 can adjust the impact height of the falling object, and the angle adjusting device 4 can adjust the impact angle of the falling object. The falling objects 3 are iron balls with the mass of 20kg, 30kg and 50 kg.
The positions of the lifting device 1 and the Christmas tree model 5 of the forklift 12 are adjusted, the V-shaped guide rail 2 is placed on the angle adjusting device 4, the angle of the V-shaped guide rail 4 is adjusted to be 30 degrees, the lifting device 1 is adjusted to ensure that the height of the falling object is 2m, and the weight of the falling object 3 is 20 kg.
And arranging the pasting position of the strain gauge according to the abaqus finite element analysis result. Three-axis strain gauges are arranged at the position of the anti-falling cap 6 and the I-shaped steel 8, and two-axis strain gauges are arranged on the control panel 7 and the tree body. And (4) polishing the surface of the part to be detected to be flat, and smearing alcohol on the polished position. And (3) coating 502 glue on the back of the strain gauge, pasting the strain gauge on the surface of the tested piece, and pressing the strain gauge for 2-3 seconds by using a polytetrafluoroethylene film to fix the strain gauge.
Preparation of the dynamic strain gauges 9 before operation: before the instrument is electrified, the bridge box is connected into a full bridge, and an aviation plug of the bridge box is inserted into an aviation socket of the channel and screwed. The 220V 50Hz commercial power is used for supplying power, one end of a power line is inserted into an instrument power socket, the other end of the power line is connected with the commercial power, then a power switch of a rear panel of the power supply is put into an 'on' position, and the power supply is switched on. At this time, the channel power supply to be used is set to be on, and then the working indicator light of the front panel of the channel is turned on to enter a working state.
And (4) arranging the wires on the attached strain gauges and connecting the wires to the bridge box. Each dynamic strain gauge 9 has four channels corresponding to the four bridge boxes, and the strain gauge is connected to the bridge boxes respectively, so that the connection between the strain gauge and the dynamic strain gauge 9 is completed, wherein the dynamic strain gauge 9 is a super dynamic strain gauge.
Next, the dynamic strain gauge 9 is connected to an oscilloscope 10. And connecting the output interfaces of the dynamic strain gauges 9 with the digital oscilloscope 10 by using BNC cables in a one-to-one correspondence manner according to the channel numbers. The channel corresponding to the strain gauge on the incident rod is used as a trigger channel, when a lead of one channel is accessed, the corresponding channel is activated, the knob above the channel interface accessing the strain gauge signal on the incident rod is pressed once, the signal on the incident rod is used as a trigger signal, the button of the trigger condition is pressed, and the trigger condition is set as falling edge trigger. The method comprises the steps of firstly setting a sampling channel in an oscilloscope 10, realizing by pressing a digital button of a corresponding channel, then setting a trigger channel, realizing by pressing a button of a trigger source under the corresponding channel, setting a trigger mode by selecting a rising edge or a falling edge in a Slope mode under a menu bar, setting trigger time by rotating a knob of a position to observe the position of a T on a display to set the trigger time, setting a trigger reference by rotating a knob of a level to adjust the level to realize the setting of the trigger reference, setting a sampling rate by rotating a knob of a scale, setting the sampling length by pressing a button of an acquisition, pressing a button on the right side of the acquisition length of the display, realizing the setting of the sampling length by rotating a knob of a universal key, and pressing a button of a single acquisition to prepare a test after the setting is finished. The oscilloscope 10 is connected with a computer 11 by a connecting wire, and test data are acquired by corresponding software in an experiment.
Before the experiment, the waveform change on the oscilloscope 10 is observed by pressing the Christmas tree falling object prevention cap 6. And detecting whether the strain gauge is damaged or not or the connection is not tight, and correcting in time. A50 kg weight 3 was placed on top of the V-shaped rail 2m above the ground. The falling object 3 is released freely, the falling object 3 is ensured to impact the falling-object preventing cap 6 according to a specified angle, one-time measurement is completed, and data are recorded; the bridge box is lifted off to the foil gage wire on control panel 7, the double-shaft foil gage on the tree body is connected into the bridge box, the falling object 3 is placed on the top end of the V-shaped guide rail 2 again, the falling object 3 is released freely, the second measurement is completed, and data are recorded. The position of the V-shaped guide rail 2 on the angle adjusting device 4 is adjusted, so that the impact angle of the falling object 3 sliding along the V-shaped guide rail 2 is 60 degrees, the falling object 3 is freely released, the falling object 3 is guaranteed to impact the falling object prevention cap 6 according to the specified angle, the third measurement is completed, and data are recorded. The bridge box is lifted off to foil gage wire on the tree body, the biaxial foil gage on the control panel 7 is connected into the bridge box, the falling object 3 is placed on the top end of the V-shaped guide rail 2 again, the falling object 3 is freely released, fourth measurement is completed, and data are recorded. The position of the V-shaped guide rail 2 on the angle adjusting device 4 is adjusted, so that the impact angle of the falling object 3 when sliding along the V-shaped guide rail 2 is 90 degrees, the falling object 3 is released freely, the falling object 3 is guaranteed to impact the falling object prevention cap 6 according to the specified angle, the fifth measurement is completed, and data are recorded. The bridge box is lifted off to the foil gage wire on control panel 7, and the biax foil gage on the tree body inserts the bridge box, will weigh down thing 3 and place 2 tops in V type guide rails in again, freely releases and weighs down thing 3, accomplishes the sixth measurement, record data.
In the process that the falling object 3 impacts the Christmas tree model, data collected by the TBS2000 oscilloscope 10 are voltage changes corresponding to strain of the strain gauge. Within 0.02S of each impact, the oscilloscope 10 will collect voltage values around the trigger point, and will eventually collect 2000 voltage values. Since the 2000 values are not all valid data, most data on the left and right sides of the trigger point are voltage values measured in a steady state, and therefore, only the voltage value when the voltage value measured in the process of hitting the Christmas tree reaches the peak value and the voltage change values on the two sides of the peak value are taken.
As shown in table 1, when the weight 3 is 50kg, the falling height is 2m, and the impact angle is 30 degrees, the voltage values measured in the process of the collision of the christmas tree model 5 through the first channel to the fourth channel reach the peak voltage value and the voltage change values at both sides of the peak value.
TABLE 1
As shown in table 2, when the weight 3 is 50kg, the falling height is 2m, and the impact angle is 30 degrees, the voltage values measured by the fifth to eighth channels in the process of the impact on the christmas tree model 5 reach the peak value and the voltage change values at both sides of the peak value.
TABLE 2
The bridge box of the dynamic strain gauge 9 is half-bridge 2V bridge voltage, the amplification factor is 100 times, the microstrain of the strain gauge corresponding to 1V voltage is 496 mu epsilon, and the voltage value measured by each channel can be converted into microstrain according to the conversion ratio. The transition of channel one is shown below.
A first channel:
2.5×496＝1240με
4.5×496＝2232με
4.25×496＝2108με
3×496＝1488με
2×496＝992με
1.25×496＝620με
similarly, 100 strain values on both sides of the maximum strain value for each channel can be obtained.
In the test, two strain gauges, namely a biaxial strain gauge and a triaxial strain gauge, are used, and after strain values of the anti-falling object cap 6, the I-shaped steel 8, the control panel 7 and the tree body are obtained, the strain values of the anti-falling object cap 6, the I-shaped steel 8, the control panel 7 and the tree body at various parts are calculated according to the strain values measured by the strain gauges in various channels.
Fig. 2 is a schematic diagram of triaxial strain gauge stress calculation. The three-axis strain gauge strain calculation formula is as follows:
1、εa→εb→εcpositive direction when rotating
2. Angle theta
εa＞εcWhen, is expressed as εaAngle between axis and maximum strain
εa＜εcWhen, is expressed as εcAngle between axis and maximum strain
εaAnd epsiloncThe magnitude comparison of (1) contains +, -signs
Main strain:
the falling object preventing cap 6, the I-steel 8, the tree body and the control panel 7 of the Christmas tree can be obtained respectively by the formula and 0.02 of the falling object 3 when being impacteds100 strain values on the left side and the right side of the maximum value of the internal strain can be calculated, the strain value change obtained through calculation can be converted into an image, the stress change conditions of different parts of the underwater Christmas tree model 5 when the underwater Christmas tree model is impacted by the falling object 3 can be clearly seen through the image, and the deformation condition of the underwater Christmas tree model 5 when the falling object 3 is impacted can be clearly analyzed through the image. As shown in fig. 3, the strain change of the falling object prevention cap 6 of the underwater christmas tree model 5 when the falling object 3 is impacted by the falling object 3 when the iron ball of the falling object 3 is 50kg, the falling height is 2m, and the impact angle is 30 degrees.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A method for measuring the impact deformation of an underwater Christmas tree simulating falling object is characterized by comprising the following steps:
s1: placing the falling object on a forklift, attaching a connecting strain gauge to the measured part of the Christmas tree model, and electrically connecting the strain gauge, the dynamic strain gauge, the oscilloscope and the computer in sequence;
s2: starting the testing device and adjusting the oscilloscope to a state to be tested;
s3: adjusting the height and angle of the forklift, releasing the falling object, and enabling the falling object to fall and impact the measured part of the Christmas tree model;
s4: and reading the test result through the test device.
2. The method for measuring the impact deformation of the falling object of the underwater Christmas tree as claimed in claim 1, wherein in the step S1, the measured part of the Christmas tree model is an object falling prevention cap, I-shaped steel, a tree body and a control panel, the object falling prevention cap and the I-shaped steel are respectively attached and connected with a triaxial strain gauge, and the tree body and the control panel are respectively attached and connected with a biaxial strain gauge.
3. The method of claim 1, wherein in step S1, the surface of the part of the christmas tree model to be measured should be polished.
4. The method for measuring the impact deformation of the underwater Christmas tree during simulation of falling objects according to claim 1, wherein in step S1, the strain gauge is connected to the dynamic strain gauge through a bridge, the dynamic strain gauge is connected to the oscilloscope through a transmission line, and the oscilloscope is connected to the computer through a data line.
5. The method for measuring the impact deformation of the falling object of the underwater Christmas tree as claimed in claim 1, wherein in step S2, the measured part of the Christmas tree is pressed after the test instrument is started, whether the waveform on the oscilloscope changes or not is observed, whether the strain gauge is stuck or not or the connection is not tight is detected, and the correction is carried out.
6. The method of claim 1, wherein in step S3, the pendant is released freely from the top of the forklift.
7. The method of claim 1, wherein in step S3, the height and angle of the forklift should be adjusted multiple times for testing.
8. The method for measuring impact deformation of falling object of subsea tree simulation of claim 1, wherein in step S4, after reading the test result, the test result is recorded and the voltage value measured each time the christmas tree model is impacted reaches the peak and the voltage change values at both sides of the peak are taken.
9. The method of claim 1, wherein in step S1, the forklift is provided with a lifting device and a plurality of angle adjusting devices, the lifting device is slidably connected to one side of the forklift, and the angle adjusting devices are uniformly distributed in a vertical direction of the lifting device.
10. The method for measuring the impact deformation of the underwater Christmas tree during the simulation of falling objects according to claim 9, wherein the forklift is further provided with a V-shaped guide rail, one end of the V-shaped guide rail is placed on the edge of the lifting device in the horizontal direction, and the other end of the V-shaped guide rail is placed on the angle adjusting device.
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| CN116451525A (en) * | 2023-03-27 | 2023-07-18 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225949A (en) * | 2017-12-28 | 2018-06-29 | 天津大学 | A kind of experimental provision for being used to test catalase and calibration impact velocity and the method for loss of energy |
| CN110715786A (en) * | 2019-11-19 | 2020-01-21 | 中国交通建设股份有限公司 | Underwater impact test device and method for underwater suspension pipe body |
| CN110864864A (en) * | 2019-11-22 | 2020-03-06 | 北京航空航天大学 | Experimental device and experimental method capable of observing impact deformation and impact force measurement in situ |
| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
| CN111707437A (en) * | 2020-07-07 | 2020-09-25 | 中国矿业大学(北京) | Experimental platform for simulating impact of falling object on oil and gas pipeline and application method |
| CN113107926A (en) * | 2021-04-09 | 2021-07-13 | 美钻深海能源科技研发（上海）有限公司 | Device and method for testing subsea tree |
| AU2021104410A4 (en) * | 2021-07-21 | 2021-09-16 | Beihang University | Condition-based maintenance method and system for subsea tree system based on remaining useful life prediction |
-
2021
- 2021-12-28 CN CN202111629558.2A patent/CN114509227A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225949A (en) * | 2017-12-28 | 2018-06-29 | 天津大学 | A kind of experimental provision for being used to test catalase and calibration impact velocity and the method for loss of energy |
| CN110715786A (en) * | 2019-11-19 | 2020-01-21 | 中国交通建设股份有限公司 | Underwater impact test device and method for underwater suspension pipe body |
| CN110864864A (en) * | 2019-11-22 | 2020-03-06 | 北京航空航天大学 | Experimental device and experimental method capable of observing impact deformation and impact force measurement in situ |
| CN111707566A (en) * | 2020-06-24 | 2020-09-25 | 太原理工大学 | Experimental system for researching dynamic response of structure under impact load and application method |
| CN111707437A (en) * | 2020-07-07 | 2020-09-25 | 中国矿业大学(北京) | Experimental platform for simulating impact of falling object on oil and gas pipeline and application method |
| CN113107926A (en) * | 2021-04-09 | 2021-07-13 | 美钻深海能源科技研发（上海）有限公司 | Device and method for testing subsea tree |
| AU2021104410A4 (en) * | 2021-07-21 | 2021-09-16 | Beihang University | Condition-based maintenance method and system for subsea tree system based on remaining useful life prediction |
Non-Patent Citations (2)
| Title |
|---|
| 周美珍;王刚;邢广阔;廖洪千;王长涛;: "水下结构物保护罩受坠物撞击的有限元分析", 哈尔滨工程大学学报, no. 09, 15 July 2015 (2015-07-15), pages 11 - 15 * |
| 黄熠等: "浅水采油树防落物保护框架结构设计优化", 石油工程建设, vol. 47, no. 4, 17 August 2021 (2021-08-17), pages 55 - 60 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116451525A (en) * | 2023-03-27 | 2023-07-18 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
| CN116451525B (en) * | 2023-03-27 | 2023-09-12 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
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