Energy-based and local approaches to the strength analysis of ceramic laminates with thermal residual stresses through the finite element method

P. Vena, E. Bertarelli, D. Gastaldi, R. Contro

Research output: Contribution to journalArticle

Abstract

This paper deals with the strength analysis of ceramic laminates subjected to residual stress fields. In particular, alumina/mullite/zirconia ceramic materials have been taken into consideration. To this purpose, an energy-based approach and a micromechanical local approach have been used within the framework of the finite element method. The results obtained through the numerical analyses are consistent with the experimental ones, providing a correct estimation of the limit strength; furthermore, a lower bound on the external applied loads, below which no crack propagation occurs, can be identified. The local approach has led to a strength distribution that deviates from the typical Weibull distribution; this is owed to the residual stress field. Indeed, a stress-dependent Weibull modulus has been found.

Original languageEnglish
Pages (from-to)576-582
Number of pages7
JournalMechanics Research Communications
Volume35
Issue number8
DOIs
Publication statusPublished - Dec 2008

Fingerprint

thermal stresses
Thermal stress
laminates
residual stress
Laminates
Residual stresses
finite element method
ceramics
Finite element method
stress distribution
Aluminum Oxide
Mullite
Weibull distribution
Ceramic materials
Zirconia
Crack propagation
Alumina
crack propagation
zirconium oxides
energy

Keywords

  • Ceramic laminates
  • Finite element method
  • Linear elastic fracture mechanics
  • Weibull statistic

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Energy-based and local approaches to the strength analysis of ceramic laminates with thermal residual stresses through the finite element method. / Vena, P.; Bertarelli, E.; Gastaldi, D.; Contro, R.

In: Mechanics Research Communications, Vol. 35, No. 8, 12.2008, p. 576-582.

Research output: Contribution to journalArticle

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