Cohesive Modeling of Dynamic Crack Growth in Homogeneous and Functionally Graded Materials
Journal Article
·
· AIP Conference Proceedings
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801 (United States)
- Tecgraf/PUC-Rio Computer Science Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de Sao Vicente 225, Rio de Janeiro, RJ, 22450-900 (Brazil)
This paper presents a Cohesive Zone Model (CZM) approach for investigating dynamic crack propagation in homogeneous and Functionally Graded Materials (FGMs). The failure criterion is incorporated in the CZM using both a finite cohesive strength and work to fracture in the material description. A novel CZM for FGMs is explored and incorporated into a finite element framework. The material gradation is approximated at the element level using a graded element formulation. A numerical example is provided to demonstrate the efficacy of the CZM approach, in which the influence of the material gradation on the crack growth pattern is studied.
- OSTI ID:
- 21055265
- Journal Information:
- AIP Conference Proceedings, Vol. 973, Issue 1; Conference: M and FGM 2006: Conference on multiscale and funtionally graded materials 2006, Oahu Island, HI (United States), 15-18 Oct 2006; Other Information: DOI: 10.1063/1.2896840; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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