Modifications of the Newton–Raphson method for finite element simulations in ferroelectroelasticity
Modifications of the Newton–Raphson method for finite element simulations in ferroelectroelasticity
复制标题
铁电弹性有限元模拟牛顿拉夫森法的修改
DOI:
10.1016/j.ijsolstr.2012.11.008
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发表时间:
2013
影响因子:
3.6
通讯作者:
Ncumcistcr
中科院分区:
文献类型:
--
作者:
Ncumcistcr
The system of equations arising in finite element simulations of components made of ferroelectroelastic materials is non-linear if the loading is sufficiently high. The Newton–Raphson method represents a widely used iterative technique to solve this system of non-linear equations. However, if the scalar potential formulation is utilised, convergence difficulties may occur. This circumstance can be primarily attributed to the specific form of the non-linear response of typical ferroelectroelastic materials being subjected to electrical loading. The present paper is devoted to modifications of the Newton–Raphson method, which are capable of improving the convergence behaviour experienced in the finite element iteration. We extend an existing modification to the fully coupled, ferroelectroelastic case. Additionally, a new modification of the Newton–Raphson method is proposed. This method applies an iteration algorithm, which is virtually equivalent to the iteration algorithm of the unmodified Newton–Raphson method combined with the vector potential formulation. An important feature of both modifications is that they are applied on the integration point level. Therefore, the global non-linear finite element iteration scheme remains unchanged. Finally, the practicability of the modifications discussed in the paper is shown in a numerical example.
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影响因子:
--
作者:
A. Semenov;H. Kessler;Albrecht C. Liskowsky;H. Balke
通讯作者:
H. Balke
影响因子:
3.6
作者:
S. Roth;P. Neumeister;A. Semenov;H. Balke
通讯作者:
H. Balke
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Semenov;Albrecht C. Liskowsky;H. Balke
通讯作者:
H. Balke
影响因子:
3.6
作者:
Holger Schwaab;H. Grünbichler;P. Supancic;M. Kamlah
通讯作者:
M. Kamlah