求机构速度瞬心的对心四边形法

本文阐述了求机构中不相邻两构件间速度瞬心的一种新方法,即“对心四边形法”,该法是将两不相邻构件和与它们相关的两构件组成封闭四边形,并用两封闭边的交点求得它们之间的速度瞬心的一种方法,此法比传统的三心定理法更为简便,可不受三心定理法求解瞬心顺序的限制,对求解平面多杆机构的速度瞬心是一种新的有效方法。

Opposite Centric Quadrilateral Method for Finding the Instantaneous Center of Velocity

he article expounds a new method to solve the instantaneous center of velocity between two disconnected members in the mechanism.It is l'opposite centric quadrilateral".The method is to make up closed quadrilateral by the two disconnected members and two members which connect with them,and to settle the instantaneous center of velocity between two closed sides by their point of intersection.It is simpler and easier than the traditional Kennedy's theorem, is not limited by the sequence of the instantaneous center which the Kennedy's theorem solves,it is a new and effective method to settle the instantaneous center of the planar multi--linkage.