刚体上的力等效任意移动分析研究

The Research of Equivalent Random Moving of Force

在力可传性原理和力平移定理基础上,分析了作用于刚体上的力等效移动规律认识的现状,提出了力任意移动定理。应用力平移定理、力平行四边形法则和空间矢量运算关系,推导出了作用于刚体上的力等效任意移动所附加的条件,明确了附加力偶和附加力的求解方法。建立起了力可传性原理、力平移定理和力平面任意移动定理与该定理的关系,从而使力等效移动规律形成完整的理论体系,这为解决相关实际问题或解释力学现象提供了理论依据。

The theorem of random motion of force was advanced and the equivalent moving disciplinarian of force was analyzed on the base of the principle of transmissibility of force and the theorem parallel moving of force. The affixation condition of the equivalent random moving disciplinarian of force was developed by the parallel moving theorem of force, the parallelogram of force and the operation relation of space vector. The affixation moment and force were made clear. The relationships were advanced among the principle of transmissibility of force, the theorem parallel moving of force, the theorem of random moving of force in plane and this theorem. The whole theorem system of the equivalent moving disciplinarian of force was posed. It may provide theory for solving practice problem on mechanics.