二向应力状态的矢量应力圆法

VECTOR STRESS CIRCLE METHOD OF ANALYSING PLANE STRESS

本文介绍二向应力状态的另一种解法——矢量应力圆法。该方法是以力的平衡方程为基础求力,并画出单元体所受外力的矢量图,从该图上可量出所求斜截面上力的大小和方向,从而应力的大小和方向即可求得。在某些情况下比用材料力学中的解析法或图解法更快些,且更易于想象。

Vector stress circle method is another method used to solve plane stress and intruduced in the paper. This method is based on the equilibrim equations of forces to find forces and to draw the force vectogram of element, from which the magnitude and direction of unknown forces on a certain oblique section may be obtained by measuring, and then those of stresses may be easily found. In some cases to solve plane stress by this method is quicker and easier to imagine than that by analytical and graphic methods in mechanics of materials.