Single and multiple material constraints in thermoelasticity

Mehrdad Negahban

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Constraints on the possible forms of material response, such as incompressibility or inextensibility, have long been used to simplify constitutive response models, and have resulted in substantial progress in fields such as fluid mechanics and the mechanics of composite materials. A method of imposing these constraints for thermoelastic materials is considered that follows steps that remove the need for assuming an additive term resulting from the constraint. In the process, three methods are considered for the separation of the constitutively prescribed part of the response from the part that is in reaction to the constraints. Both the case of single and multiple constraints are considered with extensive examples including special considerations for including effects associated with isotropic or anisotropic thermal expansion.

Original languageEnglish (US)
Pages (from-to)623-664
Number of pages42
JournalMathematics and Mechanics of Solids
Issue number6
StatePublished - Dec 2007


  • Anisotropic thermal expansion
  • Bell constraint
  • Geometric constraint
  • Incompressibility
  • Inextensibility
  • Internal constraint
  • Isotropic constraints
  • Material constraint
  • Multiple constraints
  • Nonlinear elasticity
  • Thermodynamics
  • Thermoelastic

ASJC Scopus subject areas

  • General Mathematics
  • General Materials Science
  • Mechanics of Materials


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