【摘要】 目的 根据实际道路工况,对电动汽车轮边减速器第二级齿轮组进行轻量化设计.方法 对已知车速谱进行分析,构建汽车行驶方程式,得到减速器系统输入扭矩谱,依据线性疲劳累积损伤理论计算齿轮的疲劳损伤,以最小化齿轮组体积为优化目标,同时将各齿轮的寿命限制在一定范围内,建立齿轮组轻量化参数优化模型,使用差分进化算法对模型进行求解,得到优化后的齿轮参数.结果 在保证车辆满足行驶里程的前提下,优化后的齿轮体积比初始体积减小了38%.结论 优化方法能够有效减小齿轮体积,优化速度快,为零件轻量化设计提供参考.更多还原

【Abstract】 Objective A lightweight design of the second-stage gear set in the electric vehicle wheel hub reducer is proposed based on actual road conditions.Methods A vehicle driving equation is established,and the input torque spectrum of the reducer system is derived from a known vehicle speed spectrum.Gear fatigue damage is calculated based on linear fatigue accumulation theory.The optimization objective is to minimize the volume of the gear set while ensuring that the service life of each gear remains within a specified range.A parameter optimization model for the lightweight design of the gear set is developed,and the model is solved using the differential evolution algorithm to obtain the optimized gear parameters.Results On the premise of ensuring that the vehicle meets the driving range,the optimized gear volume has reduced by 38% compared to the initial volume.Conclusion Optimization methods can effectively reduce the volume of gears,optimize quickly,and provide reference for lightweight design of parts.更多还原