Calculation of stress intensity factors for circumferential semi-elliptical cracks with high aspect ratio in pipes
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- 作者：A. Zareei ; S.M. Nabavi ; nabavi@mut.ac.ir" class="auth_mail" title="E-mail the corresponding author
- 关键词：Circumferential semi-elliptical crack ; Weight function method ; Finite element analysis ; High aspect ratio ; Cylinder
- 刊名：International Journal of Pressure Vessels and Piping
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：146
- 期：Complete
- 页码：32-38
- 全文大小：1629 K
文摘
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Analysis of internal circumferential semi-elliptical cracks with high aspect ratio in pipes.
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A weight function is proposed for the calculation of the stress intensity factors for the deepest point of the crack.
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An effective closed form expression is proposed to evaluate the stress intensity factors.
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Prediction of stress intensity factors for any applied stress gradients through the wall thickness without any limitations.
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A three-dimensional finite element modeling employs to calculate the stress intensity factors for different geometries.