Abstract
Creep analysis takes much more time than elastic or elastic-plastic analysis. In this study, we conducted elastic and elastic-plastic analysis and compared the results with creep analysis results. In the elastic analysis, we used primary stress, which can be classified by the Mα-Tangent method and stress intensities recommended in the ASME code. In the elastic-plastic analysis, we calculated the parameters recommended in the R5 code. For the FE models, a bending load, uniaxial load, and biaxial load were applied to the cross shaped welded plate, and a bending load and internal pressure were applied to the elbow pipe. To investigate the element size sensitivity, we conducted FE analysis for various element sizes for the cases where bending load was applied to the cross shaped welded plate. There was no significant difference between the creep stress and the alternative methods; however, in the Mα-Tangent method, the results were affected by the element size.
| Original language | English |
|---|---|
| Pages (from-to) | 703-709 |
| Number of pages | 7 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, A |
| Volume | 41 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2017 Aug 1 |
| Externally published | Yes |
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Keywords
- Asme code
- Creep stress
- Ma-Tangent method
- R5
ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Analysis of simple creep stress calculation methods for creep life assessment. / Seo, Jun Min; Lee, Han Sang; Kim, Yun Jae.
In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 41, No. 8, 01.08.2017, p. 703-709.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Analysis of simple creep stress calculation methods for creep life assessment
AU - Seo, Jun Min
AU - Lee, Han Sang
AU - Kim, Yun Jae
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Creep analysis takes much more time than elastic or elastic-plastic analysis. In this study, we conducted elastic and elastic-plastic analysis and compared the results with creep analysis results. In the elastic analysis, we used primary stress, which can be classified by the Mα-Tangent method and stress intensities recommended in the ASME code. In the elastic-plastic analysis, we calculated the parameters recommended in the R5 code. For the FE models, a bending load, uniaxial load, and biaxial load were applied to the cross shaped welded plate, and a bending load and internal pressure were applied to the elbow pipe. To investigate the element size sensitivity, we conducted FE analysis for various element sizes for the cases where bending load was applied to the cross shaped welded plate. There was no significant difference between the creep stress and the alternative methods; however, in the Mα-Tangent method, the results were affected by the element size.
AB - Creep analysis takes much more time than elastic or elastic-plastic analysis. In this study, we conducted elastic and elastic-plastic analysis and compared the results with creep analysis results. In the elastic analysis, we used primary stress, which can be classified by the Mα-Tangent method and stress intensities recommended in the ASME code. In the elastic-plastic analysis, we calculated the parameters recommended in the R5 code. For the FE models, a bending load, uniaxial load, and biaxial load were applied to the cross shaped welded plate, and a bending load and internal pressure were applied to the elbow pipe. To investigate the element size sensitivity, we conducted FE analysis for various element sizes for the cases where bending load was applied to the cross shaped welded plate. There was no significant difference between the creep stress and the alternative methods; however, in the Mα-Tangent method, the results were affected by the element size.
KW - Asme code
KW - Creep stress
KW - Ma-Tangent method
KW - R5
UR - http://www.scopus.com/inward/record.url?scp=85029230564&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029230564&partnerID=8YFLogxK
U2 - 10.3795/KSME-A.2017.41.8.703
DO - 10.3795/KSME-A.2017.41.8.703
M3 - Article
AN - SCOPUS:85029230564
VL - 41
SP - 703
EP - 709
JO - Transactions of the Korean Society of Mechanical Engineers, A
JF - Transactions of the Korean Society of Mechanical Engineers, A
SN - 1226-4873
IS - 8
ER -