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TECHNICAL PAPERS

Micromechanical Simulation of Dynamic Fracture Using the Cohesive Finite Element Method

[+] Author and Article Information
Jun Zhai, Vikas Tomar, Min Zhou

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Eng. Mater. Technol 126(2), 179-191 (Mar 18, 2004) (13 pages) doi:10.1115/1.1647127 History: Received January 06, 2003; Revised December 02, 2003; Online March 18, 2004
Copyright © 2004 by ASME
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References

Figures

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Irreversible bilinear cohesive law
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Specimen configuration for calculations
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Finite element discretization
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Idealized microstructures
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Time histories of crack length in microstructure D
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Damage evolution in microstructures A–F at t=0.15 μs
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Stress contours of maximum principle stress σmax (MPa) in microstructures A–F at t=0.15 μs
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Time histories of total crack length in idealized microstructures
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Time histories of apparent crack length in idealized microstructures
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Time histories of energy dissipated in idealized microstructures
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Energy dissipated as a function of apparent crack length for idealized microstructures
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Comparison of average energy release rate in the idealized microstructures
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Real microstructures A1–D1
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Damage evolution in microstructure D1
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Contours of maximum principle stress σmax (MPa) in microstructure D1
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Time histories of apparent crack length in the four real microstructures
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Time histories of energy dissipated in the four real microstructures
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Energy dissipated as a function of apparent crack length in the four real microstructures
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Comparison of average energy release rate in the four real microstructures with different interfacial bonding strengths
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Comparison of crack length histories in microstructure D with different interfacial bonding strenghts
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Time histories of energy dissipated for microstructure D with different interfacial bonding strengths
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Comparison of energy dissipated and energy release rate for different loading rates

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