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Modified Analytical Method for Stress Intensity Factor Calculation of Infinite MSD Plate Containing Multiple Holes

机译：含多个孔的无限MSD板应力强度因子计算的改进解析方法

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Multiple site damage (MSD) is the occurrence of small fatigue cracks at several sites within aging aircraft structures. Focusing on this typical structure, an analytical method for calculating the stress intensity factor (SIF) of an infinite plate containing multiple holes was introduced in this paper. The properties of complex variable functions are used to evaluate the stress function. The approximate superposition method is applied to solve SIF problems on multiple holes. Some numerical examples of radial cracks appearing at the boundary of two circular holes are examined by this method. By comparing the analytical and finite analysis results it was realized that the analytical results are accurate and reliable. This modified analytical method is easier to apply than traditional analytical method and can provide SIF solutions for an infinite plate containing multiple holes.
机译：多点损坏（MSD）是在老化的飞机结构内的几个位置处出现小的疲劳裂纹。针对这种典型结构，介绍了一种计算包含多个孔的无限板的应力强度因子（SIF）的分析方法。复变函数的属性用于评估应力函数。近似叠加法用于解决多个孔的SIF问题。用这种方法研究了在两个圆孔的边界处出现的径向裂纹的一些数值例子。通过比较分析结果和有限分析结果，可以看出分析结果是准确可靠的。这种改进的分析方法比传统分析方法更易于应用，并且可以为包含多个孔的无限板提供SIF解决方案。

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