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RISOn Testing Requirements for Viscoplastic Constitutive Parameter Estimation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Parameter estimation in viscoplastic models using nonlinear least squares fitting shows potential for reducing testing requirements. An efficient test matrix must include information to estimate ...
Parameter Evaluation for a Unified Constitutive Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Parameters for the unified constitutive model MATMOD [1] were evaluated for rock salt (NaCl) by using nonlinear least squares to fit the model to isothermal laboratory data. MATMOD incorporates ...
The Influence of Annealing Temperature on the Strain Rate Sensitivity of Copper in Torsion
Publisher: The American Society of Mechanical Engineers (ASME)
Experiments on Strain Rate History and Temperature Effects During the Plastic Deformation of Close-Packed Metals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A study is presented on the influence of strain rate and strain rate history on the flow stress of several metals. Experiments were performed on specimens of four polycrystalline metals: 1100-0 ...