Cohesive Modeling of Dynamic Crack Growth in Homogeneous and Functionally Graded Materials

Journal Article · Fri Feb 15 04:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2896840· OSTI ID:21055265

Zhengyu, Zhang; Paulino, Glaucio H ^[1]; Celes, Waldemar ^[2]

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1. Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Newmark Laboratory, 205 North Mathews Avenue, Urbana, IL 61801 (United States)
2. 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 973; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
CRACK PROPAGATION
CRACKS
FATIGUE
FINITE ELEMENT METHOD
FRACTURE MECHANICS
FRACTURES
MATERIALS TESTING
MATHEMATICAL MODELS
MODIFICATIONS
ZONES