Static and dynamic fracture analysis in elastic solids using a multiscale extended isogeometric analysis
Static and dynamic fracture analysis in elastic solids using a multiscale extended isogeometric analysis
复制标题
使用多尺度扩展等几何分析进行弹性固体的静态和动态断裂分析
DOI:
10.1016/j.engfracmech.2018.12.024
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发表时间:
2019-02
影响因子:
5.4
通讯作者:
Shuitao Gu
中科院分区:
文献类型:
--
作者:
Shuohui Yin;Tiantang Yu;Tinh Quoc Bui;Xuejun Zheng;Shuitao Gu
The main objective of this paper is to develop a novel multiscale approach for simulating static and stationary dynamic crack problems in two-dimensional elastic solids through an extended isogeometric analysis using the Non-Uniform Rational B-Splines (NURBS). This multiscale strategy consists of two techniques that the Nitsche’s method is applied for coupling different length-scales meshes on one hand, and on the other hand, a local enrichment technique is taken to describe the cracks independently of the mesh in the refined region by introducing the enrichment function into the isogeometric analysis displacement approximation. This method inherits the advantage of XIGA and simultaneously improves his limitation on the local mesh refinement. The proposed approach possesses several advantages in fracture modeling: (i) the singularities of the crack-tip fields can be captured precisely and conveniently by the enrichment techniques; (ii) higher-order convergence rates is achieved and (iii) stress smoothing results are achieved owing to higher continuity of NURBS basis functions. Numerical results of static and stationary dynamic crack problems validate its accuracy and efficiency.
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DOI:
10.1016/j.cma.2012.04.008
发表时间:
2012-08
期刊:
Comput. Methods Appl. Mech. Engrg.
影响因子:
--
作者:
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10.1002/nme.2864
发表时间:
2010-08-06
影响因子:
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作者:
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影响因子:
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DOI:
10.1016/j.cma.2009.11.014
发表时间:
2010-04
影响因子:
7.2
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