一、引 言 一般说的光弹性,全称为光测弹性力学,是应力分析的光学方法.它的分析对象是机械零件或结构构件的强度问题.光弹性是一种模型试验法,它是用光学灵敏材料(如环氧树脂等)制成实物的模型,施加相应的载荷,在偏振光照射下就能测定模型各点的应力,从而揭示实物在强度上的薄? I. INTRODUCTION Generally speaking, the photoelasticity is the optical measurement elasticity, which is the optical method of stress analysis.The object of analysis is the strength of the mechanical parts or structural members.The photoelasticity is a model test method, which uses optical Sensitive materials (such as epoxy resin, etc.) made of the real model, the application of the corresponding load, polarized light irradiation can be measured at various points of the model stress in order to reveal the physical strength of the thin?