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

Glaucio H. Paulino; Zheng Yu Zhang

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

Paper Titles

Finite Element Simulation of Microstresses in a Traditional FGM: The Case of Soft Tribo-Alloys
p.421

Thermo-Mechanical Analysis of RLV Thrust Cell Liners with Homogeneous and Graded Coatings
p.429

Design of Functionally Graded Structures Using Topology Optimization
p.435

Optimization of Material Composition of FGM Coating under Steady Heat Flux Loading by Micro-Genetic Algorithms
p.441

Dynamic Fracture of Functionally Graded Composites Using an Intrinsic Cohesive Zone Model
p.447

The Optimization of Propagation Characteristic of Elastic Wave in FGM
p.453

Numerical Simulation of a Centrifugal Process to Fabricate Permittivity Graded FGM from Alumina/Epoxy Mixture
p.459

Numerical Simulation of Laser Induced Modification Processes of Ceramic Substrates
p.465

Design Model and Prediction Model on Preparation of Functionally Graded Material by Co-Sedimentation
p.471

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

Abstract:

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.