某车型倒档驾驶室内啸叫声改善  

Alleviation of the chattering in the cab of a certain vehicle type under reverse gear condition

作　　者：蒋斌文 张伟松 李聪 覃臻 JIANG Binwen;ZHANG Weisong;LI Cong;QIN Zhen

机构地区：[1]上汽通用五菱汽车股份有限公司技术中心,广西柳州545007

出　　处：《现代机械》2022年第4期100-102,共3页Modern Machinery

摘　　要：某车型的NVH测试过程中,倒档工况存在啸叫声,经测试排查发现变速器侧悬置支架有共振,噪声被放大传递到车厢内。本文阐述了利用LMS测试系统对噪声产生的原因进行分析及结果验证,并通过Hypermesh软件对悬置支架模态优化,优化后的方案使啸叫声得到改善。During the NVH test of a certain vehicle type,there was a chattering in the cab under reverse gear condition.Through tests,it was found that the side mounting bracket in the gear box had resonance,and the noise was amplified and transmitted to the cab.In this paper,the LMS test system was used to analyze the causes of noise and to verify the results.The HyperMesh software was used to optimize the modal of the mounting bracket.The optimized scheme has alleviated the noise.

关 键 词：啸叫 振动 噪声 悬置支架 拓扑优化 

分 类 号：U463.33[机械工程—车辆工程]