Zhongmin Xiao1, Wengang Zhang2, Yanmei Zhang1, *, Mu Fan3
CMC-Computers, Materials & Continua, Vol.62, No.1, pp. 267-280, 2020, DOI:10.32604/cmc.2020.06567
Abstract Fluctuated loadings from currents, waves and sea ground motions are observed
on offshore steel pipelines, and they will result in small cracks to propagate continuously
and cause unexpected damage to offshore/geotechnical infrastructures. In spite of the
availability of efficient techniques and high-power computers for solving crack problems,
investigations on the fatigue life of offshore pipelines with 3D interacting cracks are still
rarely found in open literature. In the current study, systematic numerical investigations
are performed on fatigue crack growth behaviours of offshore pipelines containing
coplanar and non-coplanar cracks. Extended finite element method (XFEM) is adopted to
simulate the fatigue crack… More >
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