3314 - MOLECULAR DYNAMICS SIMULATION ON PLASTIC DEFORMATION PROCESSES AROUND A CRACK TIP UNDER CYCLIC LOADING

作者： N Miyazaki , K Nishimura

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摘要: The plastic deformation processes around a crack tip at an atomic scale level under cyclic loading are examined using molecular dynamics simulation. In this study, we deal with not only specimen including both and grain boundaries but also crack. For the boundaries, can observe emission of edge dislocations in order to relax stress concentration during loading. emitted from return because interaction between unloading. propagates due coalescence vacancies caused by repeat dislocation absorption tip. crack, is observed first Then, slip occurs after reach free surface. does propagate blunting dislocations.

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3314 - MOLECULAR DYNAMICS SIMULATION ON PLASTIC DEFORMATION PROCESSES AROUND A CRACK TIP UNDER CYCLIC LOADING

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3314 - MOLECULAR DYNAMICS SIMULATION ON PLASTIC DEFORMATION PROCESSES AROUND A CRACK TIP UNDER CYCLIC LOADING

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