Thermal residual stresses in graded ceramic composites: A microscopic computational model versus homogenized models

P. Vena

Research output: Contribution to journalArticlepeer-review

Abstract

Thermal residual stresses in ceramic composite laminates are analyzed through both a micromechanical computational model and two macroscopic homogenized models. The microscopic model is based on a purposely developed hybrid finite element able to account for the shape of the Alumina and Zirconia grains. Two different macroscopic models have been used as reference solutions for comparison: a standard displacement-based three-dimensional finite element model and an analytical model. Stress concentration factors, accounting for the microscopic material heterogeneities, have been estimated by means of the Eshelby tensor and applied to the average stress field obtained through the homogenized models.

Original languageEnglish
Pages (from-to)163-179
Number of pages17
JournalMeccanica
Volume40
Issue number2
DOIs
Publication statusPublished - Apr 2005

Keywords

  • Ceramic composites
  • Layered structures
  • Micromechanical finite element analysis

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics

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