运用低载强化理论与损伤理论,通过台架试验,对轿车下摆臂进行有限元分析,得到摆臂的危险点和危险截面,从而达到摆臂的优化设计。较之传统的设计方法,通常只考虑载荷的疲劳累积损伤作用,更能准确地反映出摆臂实际工作情况。 By using the theory of low load reinforcement and damage theory, through the bench test, the finite element analysis of the lower arm of the sedan is carried out to obtain the dangerous point and dangerous cross section of the swing arm so as to achieve the optimal design of the swing arm. Compared with the traditional design method, it usually only considers the cumulative fatigue damage of load, which can accurately reflect the actual working condition of the swing arm.