Creep elastic follow-up factors under combined primary and secondary stresses
- Authors
- Lee, Kuk-Hee; Kim, Yun-Jae; Jerng, Dong Wook; Ainsworth, Robert A.; Dean, Dave
- Issue Date
- 1월-2013
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Beam; Combined primary and secondary load; Creep elastic follow-up factor; Pipe
- Citation
- INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, v.101, pp.12 - 22
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
- Volume
- 101
- Start Page
- 12
- End Page
- 22
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104280
- DOI
- 10.1016/j.ijpvp.2012.08.005
- ISSN
- 0308-0161
- Abstract
- 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. (c) 2012 Elsevier Ltd. All rights reserved.
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