A Relationship Between Theory and Experiment for a State Variable Constitutive Equation

DC Stouffer; SR Bodner

doi:10.1520/STP28890S

SYMPOSIA PAPER Published: 01 January 1982

STP28890S

A Relationship Between Theory and Experiment for a State Variable Constitutive Equation

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A state variable constitutive equation that can be solved for the state variables can then be used to calculate the state variable histories from the stress and strain histories observed during an experiment. This was done using the Bodner-Partom flow equation for wrought René 95 at 650°C. The evolution equation was determined for a state variable that characterizes the resistance to plastic flow, and some properties of a damage state variable were established. Analysis of the tensile and creep data suggested that two different mechanisms were active during deformation. A limited number of experimental results were compared with the response calculated from the flow and evolution equations.

Author Information

Stouffer, DC

University of Cincinnati, Cincinnati, Ohio

Bodner, SR

Faculty of Mechanical Engineering, Technion — Israel Institute of Technology, Haifa, Israel

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Details

Developed by Committee: E28

Pages: 239–250

DOI: 10.1520/STP28890S

ISBN-EB: 978-0-8031-4830-7

ISBN-13: 978-0-8031-0737-3

A Relationship Between Theory and Experiment for a State Variable Constitutive Equation

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