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contributor authorS. K. Koh
contributor authorR. I. Stephens
date accessioned2017-05-08T23:36:19Z
date available2017-05-08T23:36:19Z
date copyrightAugust, 1991
date issued1991
identifier issn0094-9930
identifier otherJPVTAS-28329#368_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/109032
description abstractAn autofrettaged thick-walled pressure vessel with an external groove subjected to a pulsating internal pressure can have fatigue failures at the external groove root due to the combination of tensile autofrettage residual stress, operating stress, and stress concentration. To predict the fatigue life of the autofrettaged thick-walled pressure vessel with an external groove, the local strain approach was applied. The residual stress distribution due to autofrettage and the operating stress distribution due to internal pressure were determined using finite element analysis which resulted in theoretical stress concentration factors. To account for the mean stress effects on the fatigue life prediction of the pressure vessel, low-cycle fatigue behavior with several strain ratios was obtained using smooth axial specimens taken from the ASTM A723 thick-walled steel pressure vessel. Fatigue life predictions were made by incorporating the local strains determined from the linear rule and Neuber’s rule and the Morrow and SWT mean stress parameters determined from low-cycle fatigue tests. The predicted fatigue lives were within factors of 2 to 4, compared to simulated experimental fatigue lives based upon fatigue cracks of 2.5 mm in length. These procedures appear to be realistic for evaluating fatigue lives for this complex pressure vessel.
publisherThe American Society of Mechanical Engineers (ASME)
titleFatigue Life Prediction of an Autofrettaged Thick-Walled Pressure Vessel With an External Groove
typeJournal Paper
journal volume113
journal issue3
journal titleJournal of Pressure Vessel Technology
identifier doi10.1115/1.2928768
journal fristpage368
journal lastpage374
identifier eissn1528-8978
keywordsPressure vessels
keywordsFatigue life
keywordsStress
keywordsStress concentration
keywordsFatigue
keywordsLow cycle fatigue
keywordsAutofrettage
keywordsPressure
keywordsFatigue failure
keywordsASTM International
keywordsSteel
keywordsFinite element analysis AND Fatigue cracks
treeJournal of Pressure Vessel Technology:;1991:;volume( 113 ):;issue: 003
contenttypeFulltext


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