대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제18권4호
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- Pages.1009-1018
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- 1994
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- 1225-5963(pISSN)
DOI QR Code
유한체적법과 유한요소법을 이용한 응고과정에서의 열응력해석
Analysis of Thermal Stresses During Solidification Process Using FVM/FEM Techniques
초록
An attempt is made to develop a kind of hybrid numerical method for computations of the thermal stresses during a solidification process. In this algorithm, the phase-change heat transfer analysis is perrformed by a finite volume method(FVM) and the thermal stress analysis in a solidifying body by a finite element method(FEM). The temperatures at the grid points calculated in the heat transfer analysis are transferred to those of gauss points in elements by a bi-cubic surface patch technique for the thermal stress analysis. A hyperbolic-sine constitutive law is used to prescribe the inelastic strain rate of material. Results for the unidirectional solidification process of a pure aluminum are compared with those of others and shows good agreement.
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