基于HyperMesh的电动汽车NVH声腔模态分析  

Acoustic Modal Analysis of Electric Vehicle Based on HyperMesh

作　　者：马倩昀 冯国胜 贾素梅 李书利[2] MA Qianyun;FENG Guosheng;JIA Sumei;LI Shuli

机构地区：[1]石家庄铁道大学机械工程学院 [2]长城汽车股份有限公司

出　　处：《汽车工程师》2021年第10期29-33,共5页Automotive Engineer

基　　金：河北省省级科技计划资助(20312204D)。

摘　　要：如何有效提高汽车NVH性能并满足乘客对舒适度的要求已成为汽车企业竞争的重要方向之一。为此针对某公司提供的车型图纸,使用Catia软件完成白车身几何模型的构建。同时采用HyperMesh软件对白车身进行有限元模型建立,在有限元模型基础上添加内蒙皮、导入座椅及划分3D网格等,最终建立封闭的声腔模型,完成声腔模态的计算,并检查车内声压分布情况,为电动汽车NVH性能分析提供参考。How to effectively improve the car’s NVH performance and meet passengers’comfort requirements have become one of the important directions of competition among auto companies.For this reason,a geometric model of the body-in-white was constrcted by using Catia software based on the model drawings provided by a certain company.At the same time,HyperMesh software is used to establish a finite element model of the white b-ody,and the inner skin is added on the basis of the finite element model,the seat is imported,and the 3 D mesh is divided.Finally,a closed acoustic cavity model is established,the calculation of acoustic cavity model is complet-ed,and the sound pressure distribution in the vehicle is checked,which provides a reference for the NVH perfor-mance analysis of electric vehicles.

关 键 词：电动汽车 有限元模型 声腔模态 HYPERMESH 

分 类 号：U469.72[机械工程—车辆工程] U461.4[交通运输工程—载运工具运用工程]