Nonlinear thermoelastic analysis of composite panels under non-uniform temperature distribution

A. Barut, E. Madenci, A. Tessler

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

The response of moderately thick laminated panels experiencing large displacements and rotations under non-uniform thermal loading is investigated through a nonlinear finite element analysis. The present nonlinear thermoelastic analysis incorporates an anisoparametric, doubly curved, shallow shell element that is free of the 'locking' phenomenon. The effects of large displacements and rotations, transverse shear deformations, the coupling between stretching and bending due to shallow geometry, and Duhamel-Neumann-type thermoelastic material anisotropy are included in the element formulation. The equations of equilibrium are derived from the virtual work principle, along with the co-rotational form of the total Lagrangian formulation. A non-uniform temperature field across the shell surface is approximated by piecewise-uniform temperature distributions over individual elements. In the thickness direction, the temperature distribution is approximated linearly. Accuracy of the present analysis is established by comparison with benchmark solutions. The numerical results are presented for various configurations, including cutouts under uniform and non-uniform temperatures. The numerical results demonstrate that the present finite element analysis is computationally robust and efficient.

Original languageEnglish (US)
Pages (from-to)3681-3713
Number of pages33
JournalInternational Journal of Solids and Structures
Volume37
Issue number27
DOIs
StatePublished - Jul 2000

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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