High-efficiency improved symmetric successive over-relaxation preconditioned conjugate gradient method for solving large-scale finite element linear equations

High-efficiency improved symmetric successive over-relaxation preconditioned conjugate gradient method for solving large-scale finite element linear equations
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求解大规模有限元线性方程组的高效改进对称逐次过松弛预条件共轭梯度法

DOI:
10.1007/s10483-013-1740-x
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发表时间:
2013-09
期刊:
Applied Mathematics and Mechanics (English Edition )
影响因子:
--
通讯作者:
Li, Lian-chong
Li, Lian-chong
中科院分区:
其他
文献类型:
--
作者:
Li, Gen;Tang, Chun-an;Li, Lian-chong

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有限元分析中大型线性方程组的快速求解是计算力学中的一个经典课题。它是计算机辅助工程(CAE)和计算机辅助制造(CAM)的关键技术。本文提出了一种高效的改进的对称逐次超松弛(ISSOR)预条件共轭梯度(PCG)方法,该方法保持了与原方法一致的收敛性和内在并行性.理想情况下,与原算法相比,计算量可减少近50%。它以其固有的基本高效率运算适合于高性能计算。通过与数值计算结果的比较,表明该方法具有最好的性能。
Fast solving large-scale linear equations in the finite element analysis is a classical subject in computational mechanics. It is a key technique in computer aided engineering (CAE) and computer aided manufacturing (CAM). This paper presents a high-efficiency improved symmetric successive over-relaxation (ISSOR) preconditioned conjugate gradient (PCG) method, which maintains the convergence and inherent parallelism consistent with the original form. Ideally, the computation can be reduced nearly by 50% as compared with the original algorithm. It is suitable for high-performance computing with its inherent basic high-efficiency operations. By comparing with the numerical results, it is shown that the proposed method has the best performance.
DOI: 10.1007/978-1-4612-0575-3_12
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