重庆理工大学学报（自然科学版）2017，Vol.31Issue(12)：47-52,77,7.DOI:10.3969/j.issn.1674-8425(z).2017.12.008
大客车后视镜振动性能预测与结构优化
Vibration Performance Prediction and Structure Optimization of Passenger Vehicle Rear-View Mirror
摘要
Abstract
Rear-view mirror is an important basis for bus drivers to see the situation around the bus.In order to improve the safety of the automobile in driving,the dynamic properties of rear-view mirror should be simulated and analyzed.The constraint modal analysis of the rear-view was conducted by Hypermesh software,the natural frequencies and mode shapes were got to verify the validity of the simulation model through the impact test of LMS test software.The result indicates that the rear-view mirror has large lateral and vertical vibration and small first natural frequency,which should be controlled within a certain threshold frequency.The structure was optimized based on the result of modal analysis.The simulation result shows that the optimization design improved the first natural frequency and deduced the dangerousness of sympathetic vibration.This provides a prediction for the future design and development of the rear-view mirror as well as a basis to improve the NVH performance for the bus.关键词
后视镜/模态分析/固有频率/振型/共振Key words
rear-view mirror/modal analysis/natural frequencies/mode shapes/sympathetic vibration分类
交通工程引用本文复制引用
刘旭宇,曾发林,李建康..大客车后视镜振动性能预测与结构优化[J].重庆理工大学学报（自然科学版）,2017,31(12):47-52,77,7.基金项目
江苏省高校自然科学研究项目(11KJA580001) （11KJA580001）
