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In the current study, a rate-dependent crystal plasticity finite element method (CPFEM) was used to simulate flow stress behavior and texture evolution of a body-centered cubic (BCC) crystalline material during plastic deformation at room temperature. To account for crystallographic slip and rotation, a rate-dependent crystal constitutive law with a hardening model was incorporated into an in-house finite element program, CAMPform3D. Microstructural heterogeneity and anisotropy were handled by assigning a crystallographic orientation to each integration point of the element and determining the stiffness matrix of the individual crystal. Uniaxial tensile tests of single crystals with different crystallographic orientations were simulated to determine the material parameters in the hardening model. The texture evolution during four different deformation modes - uniaxial tension, uniaxial compression, channel die compression, and simple shear deformation - was investigated based on the comparison with experimental data available in the literature.
목차
Abstract
1. 서론
2. 결정소성 모델
3. 결정소성 유한요소해석
4. 결론
REFERENCES
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - K. K. Mathur / 1989 / On Modeling the Development of Crystallographic Texture in Bulk Forming Processes / Int. J. Plast. 5 (1) : 67 ~ 94
2. [학술지(정기간행물)] - E. Z. Kim / 1996 / Finite Element Analysis for Steady State Forming Process of Polycrystalline Metal Including Texture Development / Trans. Mater. Process. 5 (4) : 297 ~ 304
3. [학술지(정기간행물)] - 정경환 / 2012 / 3차원 결정소성 유한요소해석을 통한 변형 집합조직 예측 / 소성가공 21 (4) : 252 ~ 257
4. [학술지(정기간행물)] - F. Roters / 2010 / Overview of Constitutive Laws, Kinematics, Homogenization and Multiscale Methods in Crystal Plasticity Finite-element Modeling: Theory, Experiments, Applications / Acta Mater. 58 (4) : 1152 ~ 1211
5. [학술지(정기간행물)] - G. I. Taylor / 1938 / Plastic Strain in Metals / J. Inst. Metal. 62 : 307 ~ 324
2. [학술지(정기간행물)] - E. Z. Kim / 1996 / Finite Element Analysis for Steady State Forming Process of Polycrystalline Metal Including Texture Development / Trans. Mater. Process. 5 (4) : 297 ~ 304
3. [학술지(정기간행물)] - 정경환 / 2012 / 3차원 결정소성 유한요소해석을 통한 변형 집합조직 예측 / 소성가공 21 (4) : 252 ~ 257
4. [학술지(정기간행물)] - F. Roters / 2010 / Overview of Constitutive Laws, Kinematics, Homogenization and Multiscale Methods in Crystal Plasticity Finite-element Modeling: Theory, Experiments, Applications / Acta Mater. 58 (4) : 1152 ~ 1211
5. [학술지(정기간행물)] - G. I. Taylor / 1938 / Plastic Strain in Metals / J. Inst. Metal. 62 : 307 ~ 324
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UCI(KEPA) : I410-ECN-0101-2015-550-001629952