The effects of void cluster size on ductile fracture |
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| Institution: | 1. Dept. of Metallurgical & Materials Engineering, Inha Technical College, 100 Inha-ro, Nam-gu, Incheon 402-752, Republic of Korea;2. Magnesium Technology Innovation Center, Dept. of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea;3. School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 2066, Seobu-ro, Jangan-gu, Suwon, Republic of Korea;1. Ecole des Mines de Saint-Etienne, 158 Cours Fauriel, St-Etienne 42023, France;2. German Aerospace Centre, Institute of Materials Research, Linder Höhe, 51147 Cologne, Germany;1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;2. Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150080, China;3. Delta Power Electronics Center, Delta Electronics (Shanghai) Co., Ltd., Shanghai201209, China;1. School of Materials Science and Engineering, Southeast University, Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, China;2. Suzhou Mingzhi Technology Co., Ltd., Suzhou 215216, China |
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| Abstract: | The effects of void clustering on ductile fracture are studied by modeling a discrete set of randomly distributed clusters. Each cluster consists of four, equally-spaced, cylindrical voids. The spacing between the clusters is held constant while the spacing between the voids is varied. A Eulerian finite element program is used to numerically solve the boundary value problems. A salient feature of the previous investigations is that both the ultimate stress and the fracture strain are functions of the void distribution. In contrast, the ultimate stress remains constant while the fracture strain changes with the void cluster diameter in the current investigation. |
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