之前做两个直齿啮合的运动计算,一切都还好好的,我想重新做一个Motion计算,建立新运算,可是总是出错提示一个对话框内容是:Failure to satisfy velocity initial conditions. A probable cause is an over-specification of initial velocities of bodies. Please specify fewer initial velocities and try again。 7 Z2 y4 T0 ?! ]8 ]5 v: V# C网上说是材料问题,可我定义材料了啊,怎么还是不行,要加重力吗?可之前没加重力依然能算啊?!