A One-Dimensional Continuum Model for Shape-Memory Alloys

Abstract

In this paper we construct an explicit constitutive model that is capable of describing the thermomechanical response of a shape-memory alloy. The model consists of a Helmholtz free-energy function, a kinetic relation, and a nucleation criterion. The free-energy is associated with a three-well potential energy function; the kinetic relation is based on thermal activation theory; nucleation-is assumed to occur at a critical value of the appropriate energy barrier. The predictions of the model in various quasi-static thermomechanical loadings are examined and compared with experimental observations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA262505

Entities

People

  • James K. Knowles
  • Rohan Abeyaratne
  • San-joo Kim

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Classification
  • Energy
  • Engineering
  • Free Energy
  • Heat Energy
  • High Temperature
  • Latent Heat
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Nucleation
  • Phase Transformations
  • Potential Energy
  • Security
  • Shape Memory Alloys
  • Stress Strain Relations

Fields of Study

  • Mathematics

Readers

  • Materials Science (Mechanical Engineering).
  • Plasma Physics / Magnetohydrodynamics
  • Robotics and Automation.