基于Ansys吉利帝豪EV450电池箱的有限元分析

Finite Element Analysis of Geely Emgrand EV450 Battery Box Based on Ansys

摘要: 为分析汽车动力电池箱体的受力情况及振动，避免其在运行中发生因箱体受力不均而破损及因激励而产生共振及等情况。本文利用三维软件Catia建立电池箱三维模型，导入Ansys Workbench进行有限元静力学分析，对电池箱进行静力学、模态分析；得到静力学受力情况及8阶模态的固有频率、振型。仿真数据表明，电池箱在静态结构分析中，等效应力分布合理满足工作要求；电池箱前8阶模态的振动频率远离共振频率范围；能保证电池箱的可靠性，为后续振动特性分析和动力学分析提供理论支持。

Abstract: To analyze the stress and vibration of the automotive power battery box during actual operation. In order to avoid damage caused by uneven stress on the case and resonance caused by excitation during operation. This article utilizes the 3D software Catia to create a 3D model of the battery box and import it into Ansys Workbench for finite element static analysis. Perform static and modal analysis on the battery box to obtain the static force situation and the natural frequency and vibration mode of the 8th order mode; Simulation data shows that in static structural analysis, the equivalent stress distribution of the battery box is reasonable and meets the working requirements; The vibration frequency of the first 8 modes of the battery box is far away from the resonance frequency range, ensuring the reliability of the battery box under different working conditions and providing theoretical support for subsequent vibration characteristic analysis and dynamic analysis.