Void effect on mechanical properties of copper nanosheets under biaxial tension by molecular dynamics method |
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Authors: | Zailin Yang Qinyou Yang Guowei Zhang Yong Yang |
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Affiliation: | 1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China;2. Key Laboratory of Advanced Material of Ship and Mechanics, Ministry of Industry and Information Technology, Harbin Engineering University, Harbin, 150001, China |
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Abstract: | The relationship between void size/location and mechanical behavior under biaxial loading of copper nanosheets containing voids are investigated by molecular dynamics method. The void location and the void radius on the model are discussed in the paper. The main reason of break is discovered by the congruent relationship between the shear stress and its dislocations. Dislocations are nucleated at the corner of system and approached to the center of void with increased deformation. Here, a higher stress is required to fail the voided sheets when smaller voids are utilized. The void radius influences the time of destruction. The larger the void radius is, the lower the shear stress and the earlier the model breaks. The void location impacts the dislocation distribution. |
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Keywords: | Void effect Copper nanosheets Molecular dynamics Mechanical properties |
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