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Crack initiation at weak stress singularities - Finite Fracture Mechanics approach

机译:应力奇异性下的裂纹萌生-有限断裂力学方法

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To study crack initiation at weak stress singularities classical Fracture Mechanics approaches do not suffice. In this work weak singularities are discussed and the obstacles occurring in fracture analysis are outlined. The concept of Finite Fracture Mechanics and the use of coupled criteria is explained. A brief discussion of coupled criteria is given and relationships to other analysis methods are adressed. As an example crack initiation in adhesively bonded joints is analyzed. Two different failure models are outlined and it is shown that both agree well with experimental results.
机译:为了研究在弱应力奇点下的裂纹萌生,经典的断裂力学方法还不够。在这项工作中,讨论了弱奇异点,并概述了在断裂分析中出现的障碍。解释了有限断裂力学的概念和耦合准则的使用。给出了耦合标准的简短讨论,并探讨了与其他分析方法的关系。作为示例,分析了粘合接头中的裂纹萌生。概述了两种不同的失效模型,结果表明两者均与实验结果吻合良好。

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