Computational Mechanics

, Volume 57, Issue 1, pp 105–122

A selective enhanced FE-method for phase field modeling of ferroelectric materials

Original Paper

DOI: 10.1007/s00466-015-1223-5

Cite this article as:
Krauß, M. & Münch, I. Comput Mech (2016) 57: 105. doi:10.1007/s00466-015-1223-5

Abstract

Ferroelectric materials are characterized by electrical di-poles, forming domains of uniform polarization orientation. In phase field models diffuse interfaces separate polarization domains as domain walls. Finite elements describe such interfaces with continuous field variables. But high gradients appear in the field variable requiring corresponding interpolations in the vicinity of domain walls. Otherwise, moving interfaces between phases stick to artificial minimum energy states, known as mesh-pinning. For this purpose, we study a selective enhancement of standard finite elements to avoid mesh-pinning effects. Our method enhances the ansatz space locally without impact on the physical theory or the overall finite element formulation.

Keywords

Phase field modeling Phase transition Enhanced finite element method Ferroelectric materials 

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Institute for Structural AnalysisKarlsruhe Institute of Technology (KIT)KarlsruheGermany

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