计算力学学报2025，Vol.42Issue(5)：737-743,794,8.DOI:10.7511/jslx20240606001
基于等效接触的电池包碰撞高效高保真建模方法
Efficient and high fidelity modeling method for battery pack collision with equivalent contact
摘要
Abstract
The power battery pack of an electric vehicle is a complex system,whose efficient and high fidelity modeling is an urgent need for solving collision problems.This paper firstly proposes a hybrid reduced order battery pack model,with fine modeling in the central region and centralized mass in other parts through a simple connection contact.Compared with the refined full model,the maximum stress error is relatively small,and the computational efficiency is improved by about 3.5 times.Then,to consider the effect of the boundary further,a centroid module structural model with equivalent contact is proposed.Compared with the hybrid reduced order model,the collision displacement and the maximum stress of the centroid module structure model are much closer to those of the fine full model.Finally,an impact response analysis is conducted on the centroid module structural model and the fine full model,by comparing the behaviors of the collision center point and the impact object.It is found that both models have the similar trend in the response curves with small errors,which verifies the feasibility of the proposed model.关键词
动力电池包/混合降阶简化模型/质心模组结构模型/底部碰撞Key words
power battery pack/hybrid reduced order simplified model/centroid module structural model/bottom collision分类
数学引用本文复制引用
倪炀,李刚,曾岩..基于等效接触的电池包碰撞高效高保真建模方法[J].计算力学学报,2025,42(5):737-743,794,8.基金项目
国家自然科学基金(12372119 （）
12302146)资助项目. （）
