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Titolo:
PREDICTION OF THERMAL-STRESSES DURING VERTICAL SOLIDIFICATION OF A PURE METAL WITH DENSITY CHANGE
Autore:
LEE JH; HWANG KY;
Indirizzi:
YONSEI UNIV,DEPT MECH ENGN SEOUL 120749 SOUTH KOREA
Titolo Testata:
Journal of materials processing technology
fascicolo: 1-2, volume: 57, anno: 1996,
pagine: 85 - 94
SICI:
0924-0136(1996)57:1-2<85:POTDVS>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELEMENT; MODEL; STEEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J.H. Lee e K.Y. Hwang, "PREDICTION OF THERMAL-STRESSES DURING VERTICAL SOLIDIFICATION OF A PURE METAL WITH DENSITY CHANGE", Journal of materials processing technology, 57(1-2), 1996, pp. 85-94

Abstract

A numerical methodology for the calculation of the thermal stresses in a solidifying body with volume contraction due to solid-liquid density change is developed and applied to the vertical solidification of pure aluminum. In this algorithm, the phase-change heat-transfer analysis is performed by a finite-volume method (FVM) and the thermal-stresses analysis in a solidifying body by a finite-element method (FEM). Difficulties associated with the time-dependent solid and liquid domains, the shapes of which are also a part of the solutions, are overcome by employing the boundary-fitted coordinate system. A hypoelastic-viscoplastic constitutive model and a rate form of the principle of virtualwork are involved to model the stresses and the deformation. The effect of various cooling rates on the motion of the solid-liquid interface, on the temperatures and on the thermal stresses is presented and discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 18:47:45