Mathematics – Numerical Analysis
Scientific paper
2009-11-30
Mathematics
Numerical Analysis
26 pages, 10 figures
Scientific paper
We aimed to use finite element method to simulate the unique behaviors of liquid crystal elastomer, such as semi-soft elasticity, stripe domain instabilities etc. We started from an energy functional with the 2D Bladon-Warner-Terentjev stored energy of elastomer, the Oseen-Frank energy of liquid crystals, plus the penalty terms for the incompressibility constraint on the displacement, and the unity constraint on the director. Then we applied variational principles to get the differential equations. Next we used mixed finite element method to do the numerical simulation. The existence, uniqueness, well-posedness and convergence of the numerical methods were investigated. The semi-soft elasticity was observed, and can be related to the rotation of the directors. The stripe domain phenomenon, however, wasn't observed. This might due to the relative coarse mesh we have used.
Calderer Maria-Carme
Luo Chong
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