Mode II Stress Intensity Factors for Circumferential Through-Wall-Cracked Pipes under Torsional Loading

Published on May 15, 2021in Engineering Fracture Mechanics3.426
· DOI :10.1016/J.ENGFRACMECH.2021.107786
Yifan Huang , Yifan Huang12
Estimated H-index: 12
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Abstract
Abstract In this study, a systematic three-dimensional finite element analyses (3D FEA) are performed to evaluate the Mode II stress intensity factor (SIF) for circumferential through-wall cracked pipe under torsion moment. A wide range of crack lengths and pipe radius over thickness ratios are considered. Empirical solution of the mid-thickness Mode II SIF is developed as functions of crack lengths and pipe sizes. The deviating angle and the effective SIF regarding a through-wall crack (TWC) under combined bending and torsion moments are further discussed. The research outcome can provide more computational efficiency in structural integrity assessment of pressurized pipes and tubular structures.
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