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Parametric Study on Fracture Behaviors of Non-aligned Twin Cracked Pipe Under Bending
Thanh-Long Nguyen,Myeong-Woo Lee(이명우),Yun-Jae Kim(김윤재) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
To analyze the fracture behavior of multiple cracks and their effect, researchers did some bending tests. However, tests could not be stopped to observe details of crack propagation path and interaction due to the limitation of numbers of the test. Therefore, from test geometries in the previous studies, non-aligned twin cracked pipe simulation was performed by applying the FE damage model which based on stress modified fracture strain. In this paper, crack behaviors and the interaction effects between non-aligned twin cracks on the maximum bending stress were investigated.