Simulation of ductile crack initiation and propagation by means of a non-local Gurson-model
Simulation of ductile crack initiation and propagation by means of a non-local Gurson-model
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通过非局部 Gurson 模型模拟延性裂纹萌生和扩展
DOI:
10.1016/j.ijsolstr.2012.10.031
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发表时间:
2013
影响因子:
3.6
通讯作者:
M. Kuna
中科院分区:
文献类型:
--
作者:
G. Hütter;T. Linse;U. Mühlich;M. Kuna
In the present study a non-local GTN-model in an implicit gradient-enriched formulation is employed to simulate ductile crack growth under small-scale yielding conditions numerically. The problem in handling full material failure in a non-local damage model is pointed out. An approach is presented to deal with this problem and a numerical implementation is derived. This technique allows to simulate large amounts of crack growth. The results show that the model captures correctly the states of initial crack tip blunting, crack initiation and crack propagation if a sufficiently fine mesh is used. A systematic parameter study is performed. On this basis, a procedure to determine the model parameters from experiments is proposed.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
I. Howard;Z. H. Li;Ma Sheikh
通讯作者:
Ma Sheikh
DOI:
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发表时间:
2000
期刊:
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--
作者:
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2010
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10.1520/stp36972s
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1980
期刊:
ASTM special technical publications
影响因子:
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作者:
J. Rice;WJ Drugan;T. Sham
通讯作者:
J. Rice;WJ Drugan;T. Sham
DOI:
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发表时间:
1986
期刊:
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作者:
S. Hildebrandt;S. Bahrs
通讯作者:
S. Bahrs