A method for compiling loads for endurance test of automobile stabilizer bar bench
A technology of durability test and stabilizer bar, which is applied in the test of vehicle suspension/shock absorbing mechanism, etc. It can solve the problems of long acquisition period, high cost of six-component force test system, difficult to use load spectrum, etc.
Active Publication Date: 2021-09-10
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
The cost of using the six-component force test system is high, the acquisition period is long, and for some chassis components, due to the particularity of their use, it is impossible to obtain an accurate load spectrum through load decomposition
Equal-amplitude loading is widely used in the bench durability test of chassis parts, but the test load is usually determined by referring to the same platform model or iterative model, which has a certain degree of blindness. superior
Method used
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Embodiment Construction
[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0049] The technical problem to be solved in this embodiment is to obtain the constant-amplitude load spectrum required for the bench durability test through the road field test load spectrum of the stabilizer bar. like figure 1 Shown is the flow chart of this embodiment.
[0050] This embodiment includes two steps: S1, conduct a road test on the automobile stabilizer bar according to the vehicle road test specification, and obtain the load spectrum of the stabilizer bar road test site;
[0051] S2, convert the load spectrum of the road test site into the constant-amplitude cyclic load spectrum required for the bench durability test.
[0052] Among them, the detailed steps about the S1 step are as follows figure 1 shown, including the following steps:
[0053] S11: Simplification of the working conditions of the bench and determin...
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The invention relates to the technical field of fatigue testing of auto parts, in particular to a load preparation method for the durability test of an automobile stabilizer bar bench. According to the vehicle road test specification, the road test is carried out on the automobile stabilizer bar, and the load spectrum of the road test field of the stabilizer bar is obtained; the load spectrum of the road test field is converted into the equal-amplitude cyclic load spectrum required for the bench durability test. The invention determines the relationship matrix of loading point load-measuring point strain value through static calibration test, and then converts the measuring point strain signal of the stabilizing bar collected in the test field into the load signal of loading point, and finally through the load relative damage equivalence and load optimization The method converts the road spectrum of the proving ground into equal-amplitude symmetrical cyclic loads for bench durability tests. This method has the advantages of low cost, simple operation and short period, and makes the test results and evaluation indicators of the bench durability test and the proving ground test have a good consistency.
Description
technical field [0001] The invention relates to the technical field of fatigue testing of auto parts, in particular to a load preparation method for the durability test of an automobile stabilizer bar bench. Background technique [0002] Structural durability is one of the important performance indicators of automobiles. In order to improve the structural durability of the vehicle, a large number of CAE virtual fatigue simulations and experimental tests at the component level, system level, and vehicle level have been carried out during the vehicle development process. [0003] The key to CAE virtual fatigue simulation is the acquisition of load spectrum. At present, the wheel center load is mainly collected on the test field through the six-component force test system, and the load is decomposed into components at all levels by using multi-body dynamics simulation and virtual iteration technology. The cost of using the six-component force test system is high, the acquisitio...
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IPC IPC(8): G01M17/04
CPCG01M17/04
Inventor 袁夏丽詹双喜朱俊杰汪赢陈旷
Owner DONGFENG MOTOR CORP HUBEI