摘要
讨论了有摩擦且滑动反向（即速度方向突变）的刚体偏心碰撞中的能量损失问题。获得了与Stronge及Brach不同的结果。在牛顿碰撞定律的基础上以及按作者提出的计算方法，得到了有摩擦且滑动反向的刚体偏心碰撞下的能量损失表达式。该式表明：有摩擦的刚体偏心碰撞不会出现负的能量损失（即能量增加）。但是，摩擦系数有一临界值存在，超过这一临界值，将导致错误的结果。
The energy dissipation in no-collinear collision with friction and slip reversal is discussed in detail. A different result against stronges and Brachs'derived. Based on Newton impact law and according to the calculation method by the author, there isn't negative energy dissipation (i. e energy increase) after collision with friction and slip reversal, But there is a criteria of coefficent friction μ*. If μ>μ*, the erroneous results will be derived.
关键词
刚体动力学
碰撞
能量损失
摩擦
rigid body dynamics, collision (mechanics), energy dissipation
