【摘 要】
：
Combining substructure theory, an efficient method for frequency response is formulated. The substructure method is confirmed feasible in a simple vehicle model by comparing with the road noise charac
【机 构】
：
Guangzhou Automobile Group Co., LTD, Automotive Engineering Institute
【出 处】
：
第19届亚太汽车工程年会暨2017中国汽车工程学会年会
论文部分内容阅读
Combining substructure theory, an efficient method for frequency response is formulated. The substructure method is confirmed feasible in a simple vehicle model by comparing with the road noise characteristics of substructure and standard method. And then, substructure models for body and chassis system are established respectively for a kind of actual vehicle with the problem of road noise. Subsequently, substructure method is employed to study road noise characteristics for the full vehicle model. In addition, the noise peaks of common characteristics are determined by comparing with simulation and test results, and the peaks are used as optimiza- tion objectives, the optimal Latin hypercube method is used to optimize the peaks until all the noise amplitudes of 40~200Hz frequency band satisfy the target. Significantly, substructure method increases the computational efficiency for optimization scheme of structure and bushing stiffness, especially to bushing stiffness, the efficiency increases by 98%.
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