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Optimization Design for Car-body Structure Based on the Frequency Response Sensitivity Analysis
ZHANG Meng;CHEN Jian;CHEN Yong-gan
2011, 31 (6):
135-138.
DOI: 10.3969/j.issn.1006-1355-2011.06.030
Aiming at the problem of car-body optimization, the frequency response sensitivity analysis is used to reduce the response displacement of the car-body structure. Based on the finite element model of the car-body，the frequency response is calculated，and the displacement response curve of driver’s seat bracket is obtained，from which the vibration peak for a given frequency is found. To reduce the vibration peak, an optimal design based on the frequency response sensitivity analysis is carried out by selecting the appropriate design parameters. After the optimization，the response displacement?at key frequencies of the car is obviously reduced，and the riding comfort of the car is improved.
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