Behavior of the butt welded joint and plate surface crack propagation under tension load is studied by using finite element analysis and two coupled Paris fatigue growth laws in consideration of the retardation of the crack growth on surface layer. Results show that the butt welded joint longitudinal surface crack shapes change quickly into extremely shallowlong crack at the initial propagation phase and finally into shallowlong crack, while the plate surface crack shape and the butt welded joint transverse crack shapes change quickly into extremely near semicircular crack and finally into near semicircular crack. The butt welded joint longitudinal surface crack propagation rates are faster than those of plate surface crack and butt welded joint transverse crack.
HUANG Ru-xu*
,
HUANG Jin-hao
,
WAN Zheng-quan
. Finite element numerical simulation on longitudinal and transverse surface crack[J]. Journal of Dalian Maritime University, 2015
, 41(1)
: 49
-53
.
DOI: 10.16411/j.cnki.issn1006-7736.2015.01.010
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