Improvement of ICCG Convergence for Thin Elements in Magnetic Field Analyses Using the Finite-Element Method

Improvement of ICCG Convergence for Thin Elements in Magnetic Field Analyses Using the Finite-Element Method
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使用有限元方法改进磁场分析中薄元件的 ICCG 收敛性

DOI:
10.1109/tmag.2007.916501
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发表时间:
2008
影响因子:
2.1
通讯作者:
A. Kameari
A. Kameari
中科院分区:
工程技术4区
文献类型:
--
作者:
A. Kameari

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当网格中含有极薄单元时,传统的有限元方法会恶化不完全乔列斯基共轭梯度法在磁场分析中的收敛特性。该方法将常见的未知变量简单地添加到平行边上,大大改善了算法的收敛特性。未知数的个数增加了,但方程的阶不变,矩阵的条件变好了。本文提出的薄单元方法是奇异性分解技术(SDT)的一种应用,它与公式法和隐式修正多重网格法共同使用。
The conventional finite-element method (FEM) deteriorates the convergence characteristic of the incomplete Cholesky conjugate gradient (ICCG) method in magnetic field analyses when there are extreme thin elements in meshes. The convergence characteristic is drastically improved by a proposed method, where common unknown variables are simply added to near parallel edges. The number of unknowns is increased, but the rank of the equation is not changed and the condition of the matrix becomes better. The method for thin elements presented in the paper is an application of ldquosingularity decomposition techniquerdquo (SDT) in common with the - formulation and the implicit correction multigrid method.
隐式修正多重网格法的概念
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
岩下武史;美舩健;島崎眞昭;高橋康人;石田智之;廣谷迪;増子拓也;美舩健;高橋康人;高橋康人;岩下武史;岩下武史;高橋康人;高橋康人;守口聡一;荒井宗範;岩下武史;美舩健;荒井宗範;Takeshi Iwashita;美舩健;Takeshi Iwashita
通讯作者: Takeshi Iwashita