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本文提出了金属薄板材料中Ⅰ-Ⅱ复合型裂纹在静拉伸作用下的缓慢扩展近似模型,并利用该模型将求Ⅰ型裂纹临界载荷的K_R—曲线方法推广到Ⅰ-Ⅱ复合型问题,用以确定Ⅰ-Ⅱ复合型裂纹的临界载荷。
In this paper, the approximate model of slow expansion of Ⅰ-Ⅱ composite cracks under static tension in sheet metal is proposed. By using this model, the K_R-curve method of critical load of type Ⅰ crack is generalized to Ⅰ-Ⅱ complex type. Used to determine the critical load of Ⅰ-Ⅱ composite crack.