Dynamic Fracture of Functionally Graded Composites Using an Intrinsic Cohesive Zone Model

Abstract:

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This paper presents a Cohesive Zone Model (CZM) approach for investigating dy- namic failure processes in homogeneous and Functionally Graded Materials (FGMs). The failure criterion is incorporated in the CZM using both a ßnite cohesive strength and work to fracture in the material description. A novel CZM for FGMs is explored and incorporated into a ßnite element framework. The material gradation is approximated at the element level using a graded element formulation. A numerical example is provided to demonstrate the eácacy of the CZM approach, in which the inàuence of the material gradation on the crack branching pattern is studied.

Info:

Periodical:

Materials Science Forum (Volumes 492-493)

Edited by:

Omer Van der Biest, Michael Gasik, Jozef Vleugels

Pages:

447-452

DOI:

10.4028/www.scientific.net/MSF.492-493.447

Citation:

G. H. Paulino and Z. Y. Zhang, "Dynamic Fracture of Functionally Graded Composites Using an Intrinsic Cohesive Zone Model ", Materials Science Forum, Vols. 492-493, pp. 447-452, 2005

Online since:

August 2005

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Price:

$35.00

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