Micromechanical Modeling of the Interaction of Diffusion Mechanisms and Surface Energy With Nonlinear Material Deformation: Applications to Powder Densification and Void Growth
Subramanian, Sankara Jayaraman
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https://hdl.handle.net/2142/87699
Description
Title
Micromechanical Modeling of the Interaction of Diffusion Mechanisms and Surface Energy With Nonlinear Material Deformation: Applications to Powder Densification and Void Growth
Author(s)
Subramanian, Sankara Jayaraman
Issue Date
2001
Doctoral Committee Chair(s)
Sofronis, Petros
Department of Study
Theoretical and Applied Mechanics
Discipline
Theoretical and Applied Mechanics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
Void growth in nonlinearly creeping solids under plane-strain conditions is studied in the fifth chapter. Numerical results reveal a rich variety of solutions; in general, void shape is controlled by the strength of the diffusion process relative to the bulk creep process, whereas void size depends critically on the surface energy of the void in relation to the void size and applied load.
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