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- [BK21 세미나] 7/13(수) 류일 교수(The University of Texas at Dallas) "Multiscale modeling of size-dependent plasticity at submicr
- 작성일
- 2022.07.06
- 작성자
- 기계공학부
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기계공학부 구성원들의 많은 관심과 참여 부탁 드립니다.
▣ 주 제: Multiscale modeling of size-dependent plasticity at submicron-length scale
▣ 연 사: 류일 교수
▣ 소 속: The University of Texas at Dallas
▣ 일 시: 2022. 7. 13.(Wed) 11:00
▣ 장 소: 제4공학관 D404호 ※대면&Oline(Zoom) 동시 진행
(Zoom 회의 참가: https://yonsei.zoom.us/j/93699779985 (회의 ID: 936 9977 9985))
▣ 초 청: 강건욱 교수
▣ 초 록
The multiscale modeling has developed to investigate size-dependent plasticity by coupling conventional continuum crystal plasticity finite element (CPFEM) with a discrete defect (DD) modeling. While the detailed defect microstructure and short-range interaction is handled by DD framework, the long-range elastic interactions with image stress field are calculated by CPFEM (using commercial package (ABAQUS) with user-subroutine), accounting for complex boundary conditions. The proposed model could account for complex multi-physical phenomena, which would play an important role in obtaining a fundamental understanding of deformation mechanism at small scale. Applications of developed concurrent coupled model includes dislocation nucleation at a crack tip, nanoindentation, hydrogen embrittlement at submicron length scale. The developed model will shed light on fundamental investigation of “defect-controlled” mechanical behaviors in crystalline materials, such as plasticity and damage and fracture