基于ANSA的电动汽车车身NVH性能分析

李春阳，吴芷红^*

山东交通学院汽车工程学院，山东 济南  250357

摘要：为提高电动汽车车身结构的噪声、振动、声振粗糙度（noise vibration harshness，NVH）性能，基于ANSA平台，构建某电动汽车内饰车身结构有限元模型，合理设定典型激励点位置，仿真分析关键响应点（座椅安装点、方向盘）的振动传递函数（vibration transfer function，VTF）峰值响应情况。仿真结果表明：各响应点的VTF峰值均满足设计要求，车身内饰结构在当前布置与连接条件下对振动传递具有良好的衰减效果。该研究可为电动汽车车身NVH性能的虚拟验证提供参考，具备较高的工程应用价值。

关键词：电动汽车；NVH；ANSA；VTF

NVH performance analysis of electric vehicle body based on ANSA

LI Chunyang, WU Zhihong^*

School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China

Abstract: In order to enhance the noise, vibration, and harshness (NVH) performance of the interior body structure of electric vehicles, a finite element model of the interior body structure of a certain electric vehicle is established based on the ANSA platform. Typical excitation points are scientifically positioned, and the peak response of the vibration transfer function (VTF) at key response points (seat mounting points, steering wheel) is simulated and analyzed. The simulation results show that the peak VTF values at each response point meets the design requirements, and the interior structure exhibits good attenuation effect on vibration transmission under the current layout and connection conditions. This research provides technical support for the virtual verification of NVH performance of electric vehicle bodies and holds significant engineering application value.

Keywords: electric vehicle; NVH; ANSA; VTF