摘要
针对某电动轻便摩托车车架存在不满足垂直工况下静强度要求的问题,基于相对灵敏度分析,提出了电动轻便摩托车车架的轻量化方法。在建立电动轻便摩托车车架有限元模型的基础上,结合相对灵敏度分析方法确定了车架的优化设计变量。建立了电动轻便摩托车车架轻量化的优化模型。基于厚度尺寸的寻优策略,获得了电动轻便摩托车车架的最优结构参数。研究结果表明,优化后车架最大Von Mises应力比优化前的最大Von Mises应力值降低了51.15%,车身重量降低了1.11 Kg。优化后的摩托车车架还能满足电动轻便摩托车的时速、动力、续航能力的使用需求。
In response to the issue of insufficient static strength of the frame of a certain electric lightweight motorcycle under vertical conditions, a lightweight method based on relative sensitivity analysis for the frame of the electric lightweight motorcycle was proposed. After a finite element model estab-lished for the frame of the electric lightweight motorcycle, an optimization model was established and the optimal design variables of the frame were determined. Employing a thickness dimension optimization strategy, the optimal cross-sectional dimensions were sought. The research results show that the maximum Von Mises stress value of the optimized motorcycle frame is reduced by 51.15% compared with it before optimization, and the body weight is reduced by 1.11 kg. The op-timized motorcycle frame can also meet the needs of electric moped for speed, power, and endur-ance.
出处
《机械工程与技术》
2023年第6期528-538,共11页
Mechanical Engineering and Technology
