Quadrature rules for isogeometric shell formulations: Study using a real-world application about metal forming

被引:5
作者
Hokkanen, Jaro [1 ]
Pedroso, Dorival M. [1 ]
机构
[1] Univ Queensland, Sch Civil Engn, St Lucia, Qld 4072, Australia
关键词
Isogeometric analysis; Quadrature rules; Reduced integration; Numerical locking; Hourglass problem; GAUSSIAN QUADRATURE; LOCKING-FREE; ELEMENT; INTEGRATION; SPLINES;
D O I
10.1016/j.cma.2020.112904
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper studies quadrature rules for simulating large deformations of shells using isogeometric analysis. Several recently proposed rules and their effects on a real-world application known as incremental sheet forming are investigated. It is observed that, when tackling real-world applications, unexpected problems arise and, therefore, theoretical studies only with manufactured solutions are not enough for a complete verification of a method. The chosen application reveals problems with certain quadratures and that some simple stabilization strategies cannot completely suppress hourglass modes. Additionally, the effects of quadrature rules on the total computational costs are demonstrated and the influence of the maximum stable time step is assessed using a highly demanding simulation. (C) 2020 Elsevier B.Y. All rights reserved.
引用
收藏
页数:16
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