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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2003.6
- 수록면
- 914 - 922 (9page)
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In this paper, the strain localization of voided ductile material has been analyzed by nonlocal plasticity formulation in which the yield strength not only depends on an equivalent plastic strain measure (hardening parameter), but also on the Laplacian thereof. The gradient terms in yield criterion show an important role on
modeling strain-softening phenomena of material. The influence of the mesh size on the elastic-plastic deformation hehavior and the effect of the characteristic length parameter for localization prediction are also investigated. The proposed nonlocal plasticity shows that the load -strain curves converge to one curve. Results using nonlocal plasticity also exhibit the dependence of mesh size is much less sensitivity than that for a corresponding local plasticity formulation.
modeling strain-softening phenomena of material. The influence of the mesh size on the elastic-plastic deformation hehavior and the effect of the characteristic length parameter for localization prediction are also investigated. The proposed nonlocal plasticity shows that the load -strain curves converge to one curve. Results using nonlocal plasticity also exhibit the dependence of mesh size is much less sensitivity than that for a corresponding local plasticity formulation.
목차
Abstract
1.서론
2.비국소 구성식
3.보이드를 포함한 연성재료의 손상모델
4.유한차분 및 수치계산
5.해석결과 및 고찰
6.결론
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UCI(KEPA) : I410-ECN-0101-2009-550-014039225