In this article a solution is found of the stress intensity factors in five cases. The solution is based on Airy stress function and the method of weighted residuals.
求解了五种情况的应力强度因子，采用的方法是艾雷应力函数和加权残数法。
Firstly, Airy stress function and the distributions of the membrane forces are determined by the combination of double cosine series.
首先采用双重余弦函数的组合确定了面内冲击矩形薄板的艾雷应力函数和中面力的分布；
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