【摘要】 本文介绍了进行三向应力分析的全息光弹性方法及有关技术，着重分析了全息光弹性方法用于三向应力分析的主要困难在于冻结材料的应力光学常数比Ｂ／Ａ接近-０．５，还提供了一种新的光弹性材料制作和冻结工艺，这种材料冻结时的应力光学常数比可以远离-０．５。用这种材料制成的三维模型可以单独通过全息光弹性方法直接进行一般的三向应力分析。作为一个应用的实例，用这种方法测定了对径受压元球对称断面上的各点应力分量，实验结果和理论解进行了比较。更多还原

【Abstract】 Because the conventional photoelastic materials have a stress-optical constant ratio B/A of about - 0.5 in the frozen state, the three-dimensional stresses could not be determined by analyzing the holo-photoelastic patterns of slices cut from three dimensional model of these materials. This paper presents a new manufacturing and frozen technology of photoelastic materials that have stress-optical constant ratio not near - 0.5. These materials can be used directly in the general three- dimensional stress analysis by holophotoelastic method only. Illustration of the interior normal stresses in a sphere, subjected to diametral compression, will be presented, the experimental results are compared with theoretical solution.更多还原