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Modeling of the Nucleation and Growth of Domain Needles

[+] Author Affiliations
Wenyuan Li, Chad M. Landis

The University of Texas at Austin, Austin, TX

Paper No. SMASIS2010-3917, pp. 373-374; 2 pages
doi:10.1115/SMASIS2010-3917
From:
  • ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Philadelphia, Pennsylvania, USA, September 28–October 1, 2010
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4415-1 | eISBN: 978-0-7918-3886-0
  • Copyright © 2010 by ASME

abstract

Some recent results on phase-field modeling of the nucleation, growth and interaction of domain needles are presented. First, the nucleation of domains near crack tips is studied within the context of a small-scale switching boundary layer formulation. Combinations of mechanical stress intensity factors and electric displacement intensity factors that cause domain nucleation are reported. After nucleation, domains are allowed to grow. The effects of the new domain structures on the crack growth energy release rate are studied.

Copyright © 2010 by ASME

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