设计活塞式发动机就需要考虑扭振问题。任何连结质量系统都可能具有若干形式的扭振,而且每种形式也都有自己独特的自振频率,总的可能的扭振形式取决于系统中项目的多少。假如施加于该系统的周期性扭矩的频率与该系统的自振频率相重合,那么,振动的振幅就会增大,除非采用足够的减振力量,否则 Design piston engines need to consider torsional vibration problems. Any link quality system may have several forms of torsional vibration, and each form has its own unique natural frequency, the total possible form of torsional vibration depends on the number of projects in the system. If the frequency of the periodic torque applied to the system coincides with the natural frequency of the system, the amplitude of the vibration will increase unless adequate damping forces are applied