Fourier-Accelerated Nodal Solvers (FANS) for homogenization problems
Fourier-Accelerated Nodal Solvers (FANS) for homogenization problems
复制标题
用于均质化问题的傅立叶加速节点求解器 (FANS)
DOI:
10.1007/s00466-017-1501-5
复制
发表时间:
2017
影响因子:
4.1
通讯作者:
Felix Fritzen
中科院分区:
文献类型:
--
作者:
Matthias Leuschner;Felix Fritzen
Fourier-based homogenization schemes are useful to analyze heterogeneous microstructures represented by 2D or 3D image data. These iterative schemes involve discrete periodic convolutions with global ansatz functions (mostly fundamental solutions). The convolutions are efficiently computed using the fast Fourier transform. FANS operates on nodal variables on regular grids and converges to finite element solutions. Compared to established Fourier-based methods, the number of convolutions is reduced by FANS. Additionally, fast iterations are possible by assembling the stiffness matrix. Due to the related memory requirement, the method is best suited for medium-sized problems. A comparative study involving established Fourier-based homogenization schemes is conducted for a thermal benchmark problem with a closed-form solution. Detailed technical and algorithmic descriptions are given for all methods considered in the comparison. Furthermore, many numerical examples focusing on convergence properties for both thermal and mechanical problems, including also plasticity, are presented.
登录
查看更多内容
影响因子:
3.9
作者:
Matthias Leuschner;Felix Fritzen
通讯作者:
Felix Fritzen
影响因子:
4.1
作者:
F. Fritzen;Matthias Leuschner
通讯作者:
F. Fritzen;Matthias Leuschner
影响因子:
2.9
作者:
F. Willot;B. Abdallah;Y. Pellegrini
通讯作者:
F. Willot;B. Abdallah;Y. Pellegrini
影响因子:
9.1
作者:
Fritzen, Felix;Boehlke, Thomas
通讯作者:
Boehlke, Thomas
影响因子:
4.1
作者:
J. Michel;P. Suquet
通讯作者:
P. Suquet