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在静态和动态负载下对电动汽车底盘的结构性能评估
Omar Zamzam1, Aly A Ramzy2, Mohamed Abdelaziz3
1Design and Production Engineering, Faculty of Engineering, Ain Shams University, Cairo, Egypt. omar.zamzam@eng.asu.edu.eg.
Scientific reports
|February 12, 2025
概括
这项研究分析了电动汽车 (EV) 底盘动力学,当撞击阻塞时. 电动汽车的底盘是安全的,在暂时负荷下只经历弹性变形.
科学领域:
- 汽车工程 汽车工程
- 机械工程 机械工程
- 可持续的运输可持续的运输
背景情况:
- 电动汽车 (EV) 底盘设计对于能源效率和续航里程至关重要.
- 在动态负载下保持强度的同时优化底盘重量是关键的工程挑战.
- 了解道路不规则造成的短暂力量,如速度阻塞,对于EV底盘完整性至关重要.
研究的目的:
- 为了对电动汽车底盘进行动态分析,该底盘受到来自速差的暂时悬挂力的影响.
- 提出一个负载因子,将底盘所经历的静态和动态负载联系起来.
- 在模拟动态负载条件下评估电动汽车底盘的安全性和结构完整性.
主要方法:
- 使用MATLAB Simulink模拟了四分之一的车辆模型,以确定短暂的力.
- 用SimSolid软件进行了有限元分析 (FEA),用于静态和动态负载情况.
- 模拟了三个动态分析场景:前部负荷,后部负荷和扭转负荷.
主要成果:
- 动态分析显示,最大应力为288MPa,安全系数为1.12.
- 静态分析显示最大应力为64MPa,安全系数为5.69.
- 在静态和动态负载之间确定了4.44的负载系数,表明了显著的动态放大.
结论:
- 在分析的动态负载条件下,电动汽车底盘仅表现出弹性变形.
- 计算的安全因子证实了底盘的结构完整性,以便实际使用.
- 拟议的负载因子为设计能够承受动态道路冲击的强大电动汽车底盘提供了宝贵的见解.
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