Predicting Stress Development in Gray Iron Foundry Castings
Wiese, Jeffrey W.
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https://hdl.handle.net/2142/70155
Description
Title
Predicting Stress Development in Gray Iron Foundry Castings
Author(s)
Wiese, Jeffrey W.
Issue Date
1988
Doctoral Committee Chair(s)
Dantzig, J.A.,
Department of Study
Mechanical Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Abstract
A method has been developed to predict stress development in gray iron foundry castings. Using a commercial finite element package with a user written element formulation, stresses resulting from thermal displacements in the cooling casting are computed while accounting for cast iron's radically different behavior in tension and compression with a new yield function. A user-written element is also provided to apply force-displacement boundary conditions to the surface of the casting, eliminating the mold's finite element mesh from the problem. This new method for stress allows for the correct solution of thermal stress problems in gray cast iron in only a small fraction of the time previously necessary.
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