Proposal of Failure Criterion Applicable to Finite Element Analysis Results for Wall Thinned Pipes under Bending Load

In this paper, a failure criterion applicable to large strain finite element analysis results is proposed to predict the limit bending load of the wall-thinned straight pipes. The criterion, named as the “Domain Collapse Criterion”, can handle cases for both collapse and cracking. The criterion eval...

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Bibliographic Details
Published inTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A Vol. 77; no. 783; pp. 1871 - 1883
Main Authors ITO, Yoshiaki, MESHII, Toshiyuki
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Mechanical Engineers 2011
Subjects
Bending
Combined Loading
Failure Criterion
Fracture Mode
Internal Pressure
Large Strain Finite Element Analysis
Limit Moment
Wall-Thinned Pipes
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Summary:In this paper, a failure criterion applicable to large strain finite element analysis results is proposed to predict the limit bending load of the wall-thinned straight pipes. The criterion, named as the “Domain Collapse Criterion”, can handle cases for both collapse and cracking. The criterion evaluates the limit load corresponding to collapse as the load when the Mises stress exceeds the true yield strength of a material for whole "volume" with the nominal wall thickness of the straight pipe. On the other hand, the criterion evaluates the limit load corresponding to cracking as the load when the volume where Mises stress exceeds the true tensile strength penetrates the wall thickness. Results showed that the proposed criterion can estimate the experimental limit moment within approximately 20% difference, regardless of the flaw aspect ratio.
ISSN:0387-5008
1884-8338
DOI:10.1299/kikaia.77.1871