Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Constitutive modeling of anisotropy and microstructural evolution during superplastic deformation

F.K. Abu-Farha*
Mechanical Engineering Department & Center for Manufacturing, University of Kentucky, 151 Ralph G. Anderson Building, Lexington, KY 40506, USA

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In spite of continuously growing efforts and associated developments in the field of superplastic deformation, the limited predictive capabilities of deformation and failure remain a major obstacle that hampers the widespread use of the superplastic forming process. This work focuses on the development of an anisotropic microstructure-based constitutive model that can be used to accurately simulate the superplastic forming process. The model is capable of describing the superplastic deformation under simple tension and pure shear loading conditions.

Keywords:  Superplasticity; Constitutive modeling; Anisotropy; Grain growth; Induced axial stresses; Simple tension;Simple shear

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