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本文对Ⅰ型、Ⅱ型同时存在的裂纹体前缘应力分布规律进行了研究。建立了适用于光弹性分析的,获得应力强度因子K_Ⅰ、K_Ⅱ的基本方程。该方程具有一般性。对复杂条件下的裂纹仍可适用。依据等色线资料进行实验分析计算。方法简便,结果可信。本文提出的分析方法在实例实验结果分析中与计算法比较,结果相容。表明本文提供的分析方法有效。
In this paper, the stress distributions of the cracks at the front edge of type I and type II are studied. The basic equations for obtaining the stress intensity factors K_I and K_II are established for photoelastic analysis. The equation is generic. It is still applicable to cracks under complex conditions. Based on the isochromatic data for experimental analysis and calculation. The method is simple and the result is credible. The analysis method proposed in this paper is compared with the calculation method in the analysis of the results of the example experiment and the results are compatible. It shows that the analysis method provided in this paper is effective.