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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 33
DEVELOPMENTS IN COMPUTATIONAL TECHNIQUES FOR STRUCTURAL ENGINEERING
Edited by: B.H.V. Topping
Paper VII.2

Comparison of Adaptive Procedures for Coupled Finite Element Analysis of Thermal Strain History During Continuous Solidification Processes

J.R. Boehmer, G. Funk, M. Jordan and F.N. Fett

Department of Mechanical Engineering, University of Siegen, Siegen, Germany

Full Bibliographic Reference for this paper
J.R. Boehmer, G. Funk, M. Jordan, F.N. Fett, "Comparison of Adaptive Procedures for Coupled Finite Element Analysis of Thermal Strain History During Continuous Solidification Processes", in B.H.V. Topping, (Editor), "Developments in Computational Techniques for Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 211-227, 1995. doi:10.4203/ccp.33.7.2
Abstract
The mathematical investigation of thermal crack formation during continuous solidification processes is characterized by a fully coupled analysis of solidification and further cooling, strand contraction and resulting thermal stresses. Due to variable and inhomogeneous cooling conditions each just solidified strand volume element, frozen and wedged in the matrix of neighbouring elements, has its own thermal load history, and it is drawn in line to the casting direction. For the mechanical part, a thermo-inelastic and contact problem with phase transformation, transient loadings, and moving boundary conditions is to be solved. Two different approaches to adapt Finite Element analysis to the demands of transient initial and boundary conditions are compared and discussed with regard to methodology, application areas, advantages, and disadvantages.

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