Kinematic quantities of finite elastic and plastic deformation

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Kinematic quantities for finite elastic and plastic deformations are defined via an approach that does not rely on auxiliary elements, such as reference frame and reference configuration, and that gives account of the inertial-noninertial aspects explicitly. These features are achieved by working on Galilean spacetime directly. The quantity expressing elastic deformations is introduced according to its expected role: to measure how different the current metric is from the relaxed/stressless metric. Further, the plastic kinematic quantity is the change rate of the stressless metric. The properties of both are analyzed, and their relationship with frequently used elastic and plastic kinematic quantities is discussed. One important result is that no objective elastic or plastic quantities can be defined from the deformation gradient.

Original languageEnglish
Pages (from-to)1825-1841
Number of pages17
JournalMathematical Methods in the Applied Sciences
Volume35
Issue number15
DOIs
Publication statusPublished - Oct 1 2012

Keywords

  • elasticity
  • finite deformation
  • kinematics
  • objectivity
  • plasticity
  • spacetime
  • strain

ASJC Scopus subject areas

  • Mathematics(all)
  • Engineering(all)

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