Acquisition method for dynamic wheel center loads of torsion beam type suspension

Abstract

The invention relates to an acquisition method for dynamic wheel center loads of a torsion beam type suspension. The acquisition method particularly comprises the steps of load sensitivity analysis, 2 test scheme making and implementation, 3 dynamic load acquisition, 4 dynamic load decoupling and 5 dynamic load verification. According to the acquisition method, a strain gauge measurement scheme is determined through CAE simulation, wheel center load and strain calibration tests are conducted through loading equipment and a load sensor respectively, calibration coefficients of strain and loads are obtained, participation factors of the loads are acquired through a total calibration coefficient matrix, and then a test strain signal is converted to obtain a torsion beam type suspension wheel center dynamic load time domain signal. Compared with a six-component instrument, the acquisition method has the advantages that by sticking a strain gauge to measure a strain response, the wheel center loads of the torsion beam type suspension are indirectly obtained, the cost is low, the acquisition cycle is short, and the consistence between the wheel center loads and wheel center loads acquired by the six-component instrument is high.

Description

technical field [0001] The invention relates to the field of structural design of the whole automobile and parts, in particular to a method for acquiring dynamic load of a wheel center of a torsion beam suspension structure. Background technique [0002] The structural design of the vehicle and its components requires CAE analysis, optimization and DV test verification in the early stage of research and development. After meeting the design goals, the follow-up vehicle reliability road test verification can be carried out. The key link is to quickly obtain the wheel center dynamics load. [0003] At present, the vehicle load acquisition mainly adopts the semi-analytic method, that is, the dynamic load of the wheel center is collected through the six-component force, combined with multi-body dynamics simulation and iteration, the collected wheel center load is decomposed into various system components, and used as the basis for CAE fatigue analysis. Load input, structural fa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dynamic load acquisition method for a torsion beam suspension wheel center, which solves the problems of expensive measuring equipment, high maintenance and repair costs, and response acquisition caused by using a six-component force sensor to measure the response at the road wheel center during driving. The problem of long cycle time, while ensuring the acquisition accuracy of the dynamic load of the torsion beam suspension wheel center, providing load input for CAE analysis and test verification

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