车身声腔及结构仿真分析  

Simulation Analysis of Cavity and Structure in White Body

作　　者：刘文华[1] 夏汤忠[1] 刘盼[1] 王萍萍[1] 陆志成[1] 袁智[1] 

机构地区：[1]神龙汽车有限公司技术中心,武汉430056

出　　处：《汽车科技》2011年第6期23-25,共3页Auto Sci-Tech

摘　　要：对车室声腔模态和车身结构动刚度进行分析可以避开车身壁板与车内空腔声学共振的可能性。本文主要对车内声腔建模方法进行研究,同时通过白车身动刚度和模态分析发现白车身后隔板区域与声腔在某振动频率会发生共振,为改进车身刚度指明方向。The analysis for cavity and structure dynamic stiffness can avoid BIW-plate and cavity＇s sympathetic vibration. Modeling method of cavity was studied in the paper,and then sympathetic viabration of rear shelf and cavity at some frequency was found through BIW dynamic stiffness and mode analysis,which gave us some suggestion to improve the stiffness of BIW.

关 键 词：声腔 模态 动刚度 共振 

分 类 号：U462.3[机械工程—车辆工程]