Bridging cell multiscale modeling of fatigue crack growth in fcc crystals |
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| Authors: | Vincent Iacobellis Kamran Behdinan |
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| Affiliation: | Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada |
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| Abstract: | The previously developed bridging cell method for modeling coupled continuum/atomistic systems at finite temperature is used to model fatigue crack growth in single crystal nickel under two crystal orientations at different temperatures. The method is expanded to implement a temperature‐dependent embedded atom method potential for finite temperature simulations avoiding time‐scale restrictions associated with small timesteps. Results for the fatigue simulation were compared with respect to deformation behavior, stress distribution, and crack length. Results showed very different crack growth mechanisms between the two crystal orientations as well as reduced resistance to crack growth with increased temperature. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | multiscale finite element methods damage molecular mechanics nanomechanics |
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