Abstract
In this paper, a model which represents the mechanical behavior is developed for the ferroelastic material, Lanthanum Strontium Cobalt Ferrite (LSCF), which is a ceramic material often used for a cathode of Solid Oxide Fuel Cell (SOFC). Nonelestic deformation analysis is performed to express the mechanical property of LSCF. At the same time phase transformation of ferroelasticity is analyzed by the use of phase-field model based on micro elastic theory. In the proposed ferroelasticity model, the information of deformation, which is calculated by the mechanical simulation, is introduced to the elastic energy term of phase-field equation. The mechanical properties change in accordance with the phase transformation. By coupling the deformation and phase transformation, the mechanical behavior of ferroelasticity is analyzed. On the basis of the developed model, a simple simulation is conducted.
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