摘要
在计算刚体定轴转动中的轴反作用力方程时,往往涉及到与惯量主轴成α偏角的轴转动惯量和惯性积的计算,通常采用坐标变换法解决,本文则用材料力学中平面应力的莫尔圆,巧妙地以几何方法求出轴转动惯量与惯性积。
The calculation of axis moments of inertia and inertial product that rotation axis has an angle of ALPHA with the major axis of inertial moment, is often concerned, while axis reacting force equation of fixed axis rotation is colculated for rigid bodies. Normally, the method of coordinate transformation is used. This paper introduces a gemctricai method to obtain the axis moment of inertia and inertial product by using Mohr circle of planner stress whichis often used in strenght of materials.
关键词
转动惯量
惯性积
莫尔圆
理论力学
轴
Axis, Rotary inertia, Product of intertia, Mohr's circle
