Dynamic fracture in two-phase ceramic composite microstructures is analyzed explicitly using a cohesive finite element method (CFEM). This framework allows the effects of microstructural heterogeneity, phase morphology, phase distribution, and size scale to be quantified. The analyses consider arbitrary microstructural phase morphologies and entail explicit tracking of crack growth and arbitrary fracture patterns. The approach involves the use of CFEM models that integrate cohesive surfaces along all finite element boundaries as an intrinsic part of the material description. This approach obviates the need for any specific fracture criteria and assigns models the capability of predicting fracture paths and fracture patterns. Calculations are carried out using idealized phase morphologies as well as real phase morphologies in actual material microstructures. Issues analyzed include the influence of microstructural morphology on the fracture behavior, the influence of phase size on fracture resistance, the effect of interphase bonding strength on failure, and the effect of loading rate on fracture.
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April 2004
Technical Papers
Micromechanical Simulation of Dynamic Fracture Using the Cohesive Finite Element Method
Jun Zhai,
Jun Zhai
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
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Vikas Tomar,
Vikas Tomar
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
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Min Zhou
min.zhou@me.gatech.edu
Min Zhou
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
Search for other works by this author on:
Jun Zhai
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
Vikas Tomar
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
Min Zhou
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
min.zhou@me.gatech.edu
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division January 6, 2003; revision received December 2, 2003. Associate Editor: M. P. Miller.
J. Eng. Mater. Technol. Apr 2004, 126(2): 179-191 (13 pages)
Published Online: March 18, 2004
Article history
Received:
January 6, 2003
Revised:
December 2, 2003
Online:
March 18, 2004
Citation
Zhai , J., Tomar , V., and Zhou, M. (March 18, 2004). "Micromechanical Simulation of Dynamic Fracture Using the Cohesive Finite Element Method ." ASME. J. Eng. Mater. Technol. April 2004; 126(2): 179–191. https://doi.org/10.1115/1.1647127
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