Modeling and simulation of martensitic phase transitions with a triple point
Dondl, P. W. and Zimmer, J., 2004. Modeling and simulation of martensitic phase transitions with a triple point. Journal of the Mechanics and Physics of Solids, 52 (9), pp. 2057-2077.
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A framework for modeling complex global energy landscapes in a piecewise manner is presented. Specifically, a class of strain-dependent energy functions is derived for the triple point of Zirconia (ZrO2), where tetragonal, orthorhombic (orthol) and monoclinic phases are stable. A simple two-dimensional framework is presented to deal with this symmetry breaking. An explicit energy is then fitted to the available elastic moduli of Zirconia in this two-dimensional setting. First, we use the orbit space method to deal with symmetry constraints in an easy way. Second, we introduce a modular (piecewise) approach to reproduce or model elastic moduli, energy barriers and other characteristics independently of each other in a sequence of local steps. This allows for more general results than the classical Landau theory (understood in the sense that the energy is a polynomial of invariant polynomials). The class of functions considered here is strictly larger. Finite-element simulations for the energy constructed here demonstrate the pattern formation in Zirconia at the triple point. (C) 2004 Elsevier Ltd. All rights reserved.
|Creators||Dondl, P. W.and Zimmer, J.|
|Departments||Faculty of Science > Mathematical Sciences|
|Additional Information||ID number: ISI:000223813100006|
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