刚体平面平行运动三瞬心的确定

DETERMINATION OF THE THREE INSTANTANEOUS CENTERS OF A RIGID BODY IN PLANE PARALLEL MOTION

本文通过对平面图形在自身平面内运动的探讨,确定速度、加速度和加加速度三瞬心的位置,使平面平行运动刚体上任一点的速度,加速度和加加速度可按刚体绕瞬心的转动规律求得,使运算简化。

In this article the instantaneous center of velocity, acceleration and jerk of a rigid body are determined by studying the motion of plane graphic in itself plane. Then velocity, acceleration and jerk of any point on a rigid body can be calculated simply based on the rotation law of a rigid body round its instantaneous center.