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Title:Coupled Thermal-Mechanical Fixed-Grid Finite-Element Model With Application to Initial Solidification
Author(s):Zhu, Hong
Doctoral Committee Chair(s):Thomas, Brian G.
Department / Program:Theoretical and Applied Mechanics
Discipline:Theoretical and Applied Mechanics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Mechanical
Abstract:A coupled transient finite-element model based on the fixed-grid implementation of this formulation is developed to simulate temperature, shape, and stress development in a solidifying steel shell during the initial stage of continuous casting. This verified model is applied to predict the distorted shape of a vertical section through the solidifying shell, during a sudden fluctuation in liquid level at the meniscus. The results show that thermal stress causes the exposed portion of the thin shell to bend towards the liquid, when there is a severe, sudden drop in liquid level. The subsequent rise in liquid level increases the bending. These results illustrate an important mechanism contributing to the formation of transverse surface depressions and short longitudinal surface cracks associated with severe liquid level fluctuations.
Issue Date:1997
Description:132 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
Other Identifier(s):(MiAaPQ)AAI9737303
Date Available in IDEALS:2015-09-28
Date Deposited:1997

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