Mock test method for sliding door retainers
A technology of simulation testing and holding parts, which is applied in the field of simulation testing of automobiles, can solve the problems of inability to accurately simulate the loading of the test device, the increase of force value, and the inconsistency of the force value retention effect, so as to achieve the effect of accurately guiding design and optimization
Active Publication Date: 2022-01-28
SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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Problems solved by technology
[0007] Two loading devices squeeze the inner plate at a given speed. When one of the loading devices reaches 9000N first, the loading device will continue to move, causing the force value to continue to increase, which is inconsistent with the actual force value maintenance effect and cannot be simulated accurately The real loading situation of the test device
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[0033] figure 1 The entity structure of the test device of the sliding door holder according to the standard requirements is disclosed. As mentioned earlier, according to the "Performance requirements and test methods of car door lock and door holder", the test process required for the sliding door holder required by this standard is as follows: according to the provisions of the manufacturer, 20mm / min to 90mm / min. The speed movement loads the load device extruded the door inside toward the direction outside the door until the force of 9000 N is reached on each loading device or the total displacement of 300 mm. At the same time, the force value of each loading device is monitored. If a loading device has reached 9000 N, another loading device has not reached 9000 N, then the load board reaches 9000n needs to keep this target value until another load board is also Reach the target value. When the two loading devices reach the target value, it is necessary to maintain the targ...
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The invention discloses a simulation test method for a sliding door holder, comprising: a finite element model building step, and building a finite element model of parts to be tested and test equipment according to test standards. In the model connection step, the finite element models are connected and the constraints are set, wherein a contact model is established at the connection between the door finite element model and the loading device finite element model. In the virtual sensor setting step, a virtual sensor is set at the contact model, and the virtual sensor monitors the contact force of the contact model. In the loading step, the finite element model of the loading device loads the test force and applies it to the finite element model of the door through the contact model. The virtual sensor monitors the contact force of the contact model. The loading device first loads according to the "displacement-time" mode. When the virtual sensor monitors the contact model When the contact force reaches a threshold, the loading device switches to the "force-time" mode for loading.
Description
Technical field [0001] The present invention relates to the field of automotive testing, and more particularly to analog simulation test techniques for automobiles. Background technique [0002] At present, the domestic automobile industry is booming, car traffic accidents are also increasing, and automotive safety is increasingly concerned, and various regulations and evaluation systems related to this car safety are also gradually fine and strict. The door is an important part of the body, and its lateral strength is directly related to the safety of the occupant. In 2013, China National Standards Committee issued the "Performance requirements and test methods of automobile door lock and door holder" (hereinafter referred to as "standard"), in this way as the safety assessment criteria for the door. However, with the test method, the need for the safety of the door safety, the risk is large, and the cost is high. It is also possible to perform cost optimization design on the do...
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IPC IPC(8): G01M17/007G01M13/00G06F30/23G06F111/10
CPCG01M17/007G01M13/00G06F30/23G06F2111/10
Inventor 解跃青李婷李昌龙吴峻岭
Owner SAIC VOLKSWAGEN AUTOMOTIVE CO LTD