摘要
本文从平面应力状态的应力平衡方程式和应力的调和方程出发，导出正应力的和与差与剪应力之间的关系．在此基础上得到了只使用主要横截面及其附近的等差线，并且不管试件形状如何，能容易地分离主应力的方法。并以Ａ２级２８有挡锚链为例进行了计算，并与其全息光弹结果进行了比较．
The paper introduced the relation of the sum and difference of normal stress and shearing stress based on the concepts or equations of the equilibrium and harmonics of plane stress problem. The method employd the equidifferent line of the main and / or the bour sections could easy separate the normal stress for any complex shapes of construction. The demonstration of the method was carried out by considering a design example.
关键词
正应力
剪应力
等差线
锚链
normal stres,shearing stress,equidifferent line,shaped crack
