한국CDE학회논문집 (Korean Journal of Computational Design and Engineering)
- 제2권2호
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- Pages.71-76
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- 1997
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- 2508-4003(pISSN)
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- 2508-402X(eISSN)
다결정재의 이방성 탄.점소성 유한요소해석
Anisotropic Elasto-Viscoplastic Finite Element Analysis for Polycrystalline Materials
초록
The deformations of polycrystalline materials are modelled by linking a constitutive equation for the crystallographic slip of a single crystal to the macroscopic behavior of the aggregate. In this study, anisotropic elasticity (lattice stretching) of a cubic crystal is incoporated into the anisotropic plasticity from crystallographic slip. The constitutive description for the aggregate, derived from a crystal plasticity theory, is used to formulate a Consistent Penalty Finite Element Method for the anisotropic elasto-viscoplastic deformation of polycrystalline materials. As an application, a plane-strain forging process is simulated and the effects of the initial textures on the deformation behavior of the workpiece are examined.