書誌事項
- タイトル別名
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- Dislocation-Based Crystal Plasticity Modeling and Simulation for HCP Metals Considering Evolution of Twin-Microstructure
抄録
In this study, a dislocation-based crystal plasticity model for HCP crystals considering evolution of twin-microstructure is newly developed. In order to represent an anisotropic glide of dislocation in HCP crystals, a conventional dislocation-crystal plasticity model for FCC crystals is extended to that for HCP one. Additionally, a new deformation twining model based on the phase-field theory is coupled with the above model through an order parameter and resolved shear stress. In this model, elastic strain energy on twin plane and anisotropic interfacial energy between matrix and twinned region are adopted in the Ginzburg-Landau free energy as the bulk energy and the gradient energy, respectively. Using the above models, uniaxial compression tests under plane strain condition for Mg single crystal with different crystal orientations are demonstrated by means of FEM for dislocation-based crystal plasticity analyses coupling with FDM for phase-field one. From the results of the present simulations, it is shown that the present model can reproduce an anisotropic plastic behavior of Mg single crystal. Moreover, lenticular shaped twins as reported in many experimental studies are reproduced by a-axis compression tests.
収録刊行物
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- 日本機械学会論文集A編
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日本機械学会論文集A編 78 (792), 1157-1172, 2012
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282679454225664
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- NII論文ID
- 130002050342
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- COI
- 1:CAS:528:DC%2BC3sXhs1yktQ%3D%3D
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- ISSN
- 18848338
- 03875008
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可