机械设计中由于考虑构件的弹性和质量分布,必然会引起一系列动力学分析问题,本文从实例出发来论述动力学问题。 一 跳动现象 图1-1所示凸轮机构,从动件的质量为m,其位移x向上为正;弹簧刚度为k。在x=0时弹簧预紧力为F_0,在一般位置上凸轮推力F_c=F_0+ Mechanical design due to the elastic and mass distribution of components, will inevitably lead to a series of dynamic analysis of the problem, starting from an example to discuss the dynamics of the problem. A beating phenomenon Figure 1-1 shows the cam mechanism, the mass of follower m, the displacement x is positive; spring stiffness k. At x = 0, the spring preload is F_0 and in normal position the cam thrust F_c = F_0 +