Creep elastic follow-up factors under combined primary and secondary stresses
This paper presents elastic-creep finite element analyses for smooth and notched plane strain beams and axi-symmetric pipes subject to combined primary and secondary stresses. The relative magnitudes of the primary and secondary stresses are systematically varied. Elastic follow-up factors, which qu...
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Published in | The International journal of pressure vessels and piping Vol. 101; pp. 12 - 22 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.01.2013
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Subjects | |
Online Access | Get full text |
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Summary: | This paper presents elastic-creep finite element analyses for smooth and notched plane strain beams and axi-symmetric pipes subject to combined primary and secondary stresses. The relative magnitudes of the primary and secondary stresses are systematically varied. Elastic follow-up factors, which quantify the effect of the primary stress on creep relaxation behaviour of the secondary stress, are extracted as a function of the relative magnitude of the primary and secondary stresses. It is found that elastic follow-up factors due to the secondary stress are affected by the magnitude of the primary stress, and the presence of the primary stress can significantly increase elastic follow-up factors.
► Elastic follow-up factors for combined primary and secondary stresses are studied. ► Elastic follow-up factors are extracted from finite element results. ► Elastic follow-up factors are affected by the magnitude of the primary stress. ► The presence of the primary stress can significantly increase elastic follow-up factors. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0308-0161 1879-3541 |
DOI: | 10.1016/j.ijpvp.2012.08.005 |