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On the Definition of State Variables for an Internal State Variable Constitutive Model Describing Metal Deformation

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DOI: 10.4236/msa.2014.58062    3,486 Downloads   5,472 Views   Citations

ABSTRACT

The quest for an internal state variable constitutive model describing metal deformation is reviewed. First, analogy is drawn between a deformation model and the Ideal Gas Law. The use of strain as a variable in deformation models is discussed, and whether strain serves as an internal state variable is considered. A simple experiment that demonstrated path dependence in copper is described. The importance of defining appropriate internal state variables for a constitutive law relates to the ability to accurately model temperature and strain-rate dependencies in deformation simulations.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Follansbee, P. (2014) On the Definition of State Variables for an Internal State Variable Constitutive Model Describing Metal Deformation. Materials Sciences and Applications, 5, 603-609. doi: 10.4236/msa.2014.58062.

References

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