加速度瞬心的研究

Instantaneous Acceleration Center

本文提出平面运动刚体加速度瞬心与定轴转动刚体的加速度中心的相似性 ,给出按刚体定轴转动的转动中心的特点求平面运行加速度瞬心的方法。加速度瞬心的四种特殊情况。以实例说明加速度瞬心在运动学中的应用 ,加速度瞬心与相对运动动量矩定理结合在动力学中的应用 ,一些问题求解大为简化。

This article puts forward the similarity between the instantaneous acceleration center of plane motion of rigid body and the acceleration center of the fixed axis rotation of rigid body and gives the method of locating the instantaneous acceleration center of plane motion according to the characteristic of the rotating center of the fixed axis of the rigid body. Four special cases are also shown in this article. Practical examples are used to illustrate the application of the instantaneous acceleration center in dynamics. The solutions to certain problems are greatly simplified by combining the instantaneous acceleration center with the theorem of moment of momentum of relative motion.