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Sum factorization techniques in Isogeometric Analysis

delete2019-08-01
delete22
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OA
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A
Andrea Bressan *
S
Stefan Takacs
DOI:10.1016/j.cma.2019.04.031delete
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Abstract

Abstract

En 中文
The fast assembling of stiffness and mass matrices is a key issue in Isogeometric Analysis, particularly if the spline degree is increased. We present two algorithms based on the idea of sum factorization, one for matrix assembling and one for matrix-free methods, and study the behavior of their computational complexity in terms of the spline order p. Opposed to the standard approach, these algorithms do not apply the idea element-wise, but globally or on macro-elements. If this approach is applied to Gauss quadrature, the computational complexity grows as p(d+2) instead of p(2d+1) as previously achieved. (C) 2019 Elsevier B.Y. All rights reserved.
Keywords:
Isogeometric Analysis
Assembling matrices
Sum factorization
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Journal

Computer Methods in Applied Mechanics and Engineering cover
Computer Methods in Applied Mechanics and Engineering
IF:
7.3
Papers:
1.3W
Citations:
5.6W

Organization

U
university of pavia
Scholars:
2.1W
Papers: 1.6W
Citations: 8
A
Austrian Academy of Sciences
Scholars:
5.0K
Papers: 4.0K
Citations: 8.2K