文章基本信息

标题：Numerical Assessment of Tight-Fit Sleeve Clamp in the Repair Process of Cracked Submarine Pipelines
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作者：Seyed Mohammad Hossein Sharifi ; Pedram Edalat ; Babak Najafi 等
期刊名称：International Journal of Maritime Technology
印刷版ISSN：2345-6000
电子版ISSN：2476-5333
出版年度：2020
卷号：14
期号：SUMMER AND FALL 2020
页码：13-20
语种：English
出版社：Iranian Association of Naval Architecture and Marine Engineering
摘要：The present research addresses the crack arrest in the submarine pipeline under internal pressure, axial force, and bending moment. The main purpose of the research is to consider tight-fit sleeves as a solution to crack arrest. The stress intensity factor criteria are used to describe the crack behavior. It should be noted that the cracks examined here are inclined through-thickness cracks, which the ABAQUS commercial software used to simulate them. Itchr('39')s noteworthy that Mode I fracture is dealt with, and the other fracture modes are omitted. The results show that the tight-fit sleeves, preferentially arrest the inclined cracks; so that the amounts of the stress intensity factors decrease for all the cracks except for the circumferential cracks to the extent that they become closed. As a result, their growth stops in practice; however, it best reduces the stress intensity factors by up to 65.36% at the circumferential cracks, and their amounts remain non-negative. Tight-fit sleeves create a pressurized region around the inclined cracks. This causes that inclined cracks remain closed.