基于参数化优化技术对某轻卡车架的轻量化优化

Lightweight Optimization of a Light Truck Frame Based on Parameterized Optimization Technology

某主机厂新设计的一款载重型轻卡车架,其总成质量为576 kg,较竞品车型车架重83 kg。导致车架设计方案未通过评审,就要求设计工程师采用参数化优化软件,以车架总成的强度、弯曲刚度、扭转刚度、前两阶模态为性能约束,以车架纵梁、横梁、连接板等零件的板厚为优化变量,对车架总成进行轻量化优化。最终在满足车架总成性能要求的前提下,实现减重93 kg的优化目标,保证轻量化后的载重型轻卡,较竞品,在同等动力输出条件下,动力性能表现更好。

A new heavy-duty light truck frame designed by a OEM has an overall mass of 576 kg,which is 83 kg heavier than the frame of a competing model.As a result,the frame design plan fails the review.The design engineer is required to use parametric optimization software to The strength,bending stiffness,torsional stiffness,and the first two modes of the frame assembly are performance constraints,and the thickness of the frame longitudinal beams,cross beams,connecting plates and other parts are used as optimization variables to optimize the lightweight optimization of the frame assembly.Finally,on the premise of meeting the performance requirements of the frame assembly,the optimization goal of 93 kg weight reduction is achieved,and the lightweight light truck is guaranteed to perform better than competing products under the same power output conditions.