Determination of crack tip stress intensity factors by singular Voronoi cell finite element model
Determination of crack tip stress intensity factors by singular Voronoi cell finite element model
复制标题
奇异Voronoi单元有限元模型确定裂纹尖端应力强度因子
DOI:
10.1016/j.engfracmech.2018.04.042
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发表时间:
2018-06
影响因子:
5.4
通讯作者:
Guo Ran
中科院分区:
文献类型:
--
作者:
Zhang Rui;Guo Ran
A singular Voronoi cell finite element model (SVCFEM) is proposed for estimation of the mixed-mode stress intensity factors (SIFs) of crack tip in this paper. Formulation of a singular Voronoi cell finite element is based on a modified complementary energy principle. To satisfy the stress singularity at the crack tip, we enrich stress solution in assumed stress hybrid model. In addition to polynomial and reciprocal terms, singular stress terms of Williams expansion are added for elliptical crack to capture crack-tip stress concentrations. After obtaining the stress, SIFs of model I and model II were calculated using linear least-squares method. Comparisons of SVCFEM solution with analytical solution for crack are made to demonstrate the efficiency of SVCFEM.
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影响因子:
2.7
作者:
Zhang Rui;Guo Ran
通讯作者:
Guo Ran
DOI:
10.1111/j.1460-2695.2010.01504.x
发表时间:
2011-03
影响因子:
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影响因子:
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作者:
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