摘要
本文应用Altair公司的HyperMesh平台的Optistruct有限元分析软件,对某纯电动汽车的前舱盖进行了模态分析,为了避免承受来自地面的激励。选择铝合金材料替换原有钢材料,以前舱盖在约束状态下的第一阶频率约束,结合尺寸优化设计方法,进行了全新设计。结果表明:铝合前舱盖在满足结构性能要求和可制造性以及模态要求的前提下,可实现减轻质量 25.86 %,为以后初始设计阶段的铝合金罩板轻量化设计提供了一套可借鉴的方法。
In this paper, using the Optistruct finite element analysis software of Altair HyperMesh platform, the modal analysis of the front hatchcover of a pure electric vehicle is carried out to avoid the excitation from the ground. Aluminum alloy material was selected to replace the original steel material, and the cabin cover was under the constraint of the first order frequency constraint, combined with the size optimization design method, a new design was carried out. The results show that the aluminized front hatch cover can reduce the weight by 25.86 % on the premise of meeting the requirements of structural performance, manufacturability and mode, which provides a set of referential methods for the lightweight design of aluminum alloy cover plate in the initial design stage.
作者
吕兴锋
LV Xing-feng(School of Mechanical & Electrical Engineering,Chongqing Jiaotong University,Chongqing 400041,China)
出处
《内燃机与配件》
2019年第17期52-54,共3页
Internal Combustion Engine & Parts
关键词
前舱盖
铝合金
模态
优化
front hatchcover
aluminum alloy
modal
optimization
