Damage extension simulation in particle reinforced composite by using cohesive element

Akinori Yoshimura, Tomonaga Okabe

Research output: Contribution to conferencePaperpeer-review

Abstract

The present paper proposes a simple numerical analytical method for crack extension simulation in the particle reinforced composite, and reveals the effect of crack extension on the macroscopic material properties of the particle reinforced composite. The numerical method is based on the finite element analysis with the homogenization method and Dugdale-type cohesive elements. We first present the formulation of the numerical model. Next we perform the crack extension simulation for the composite reinforced by spherical particle. We consider the inclusion crack and interfacial crack between inclusion and matrix. The analytical results reveal that the inclusion crack extends always unstably regardless of the size of initial crack, and the evolution of inclusion crack sharply decreases Young's modulus in the perpendicular direction to the crack surface and shear modulus in the out-of-plane direction of crack surface. The results also demonstrated that the interfacial crack always extends stably, and the evolution of interfacial crack gradually degrades the stiffness in all direction.

Original languageEnglish
Publication statusPublished - 2008 Dec 1
EventUS-Japan Conference on Composite Materials 2008, US-Japan 2008 - Tokyo, Japan
Duration: 2008 Jun 62008 Jun 7

Other

OtherUS-Japan Conference on Composite Materials 2008, US-Japan 2008
CountryJapan
CityTokyo
Period08/6/608/6/7

Keywords

  • Cohesive zone model
  • Crack extension simulation
  • Finite element analysis
  • Homogenization method
  • Particle reinforced composite

ASJC Scopus subject areas

  • Ceramics and Composites

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