Details
| Original language | English |
|---|---|
| Pages (from-to) | 62-71 |
| Number of pages | 10 |
| Journal | International Journal of Pressure Vessels and Piping |
| Volume | 150 |
| Publication status | Published - 1 Feb 2017 |
| Externally published | Yes |
Abstract
The present work aims to study residual stresses caused by circumferentially welding of two similar API X46 steel pipes by means of finite element modeling. Considering the metallurgical phase transformations and through thermal-mechanical uncoupled analysis, the 3D modeling was carried out by SYSWELD software. Materialistic thermal and mechanical properties of all phases were defined in terms of temperature as well as phase transformation properties. Residual stress was measured through hole-drilling method. The obtained results were used to verify the finite element model. By means of full factorial experiment designing method, effects of heat input and radius to pipe thickness ratio on maximum values of hoop and axial residual stresses were investigated. The effect of each factor was studied in 3 levels and by 9 experiments. Results of statistical analysis revealed that increase in heat input and radius-thickness ratio would lead to higher values of maximum hoop and axial residual stresses. However, interactions of high level of heat input and a low level of radius-thickness ratio increased inter-pass temperature and consequently caused a sudden raise in maximum values of residual stresses.
Keywords
- API X46 pipe steel, Finite element analysis, Radius to thickness ratio, Residual stresses, Weld heat input
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: International Journal of Pressure Vessels and Piping, Vol. 150, 01.02.2017, p. 62-71.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of heat input and radius to pipe thickness ratio on the residual stresses in circumferential arc welded pipes of API X46 steels
AU - Hemmatzadeh, M.
AU - Moshayedi, H.
AU - Sattari-Far, I.
N1 - Publisher Copyright: © 2017
PY - 2017/2/1
Y1 - 2017/2/1
N2 - The present work aims to study residual stresses caused by circumferentially welding of two similar API X46 steel pipes by means of finite element modeling. Considering the metallurgical phase transformations and through thermal-mechanical uncoupled analysis, the 3D modeling was carried out by SYSWELD software. Materialistic thermal and mechanical properties of all phases were defined in terms of temperature as well as phase transformation properties. Residual stress was measured through hole-drilling method. The obtained results were used to verify the finite element model. By means of full factorial experiment designing method, effects of heat input and radius to pipe thickness ratio on maximum values of hoop and axial residual stresses were investigated. The effect of each factor was studied in 3 levels and by 9 experiments. Results of statistical analysis revealed that increase in heat input and radius-thickness ratio would lead to higher values of maximum hoop and axial residual stresses. However, interactions of high level of heat input and a low level of radius-thickness ratio increased inter-pass temperature and consequently caused a sudden raise in maximum values of residual stresses.
AB - The present work aims to study residual stresses caused by circumferentially welding of two similar API X46 steel pipes by means of finite element modeling. Considering the metallurgical phase transformations and through thermal-mechanical uncoupled analysis, the 3D modeling was carried out by SYSWELD software. Materialistic thermal and mechanical properties of all phases were defined in terms of temperature as well as phase transformation properties. Residual stress was measured through hole-drilling method. The obtained results were used to verify the finite element model. By means of full factorial experiment designing method, effects of heat input and radius to pipe thickness ratio on maximum values of hoop and axial residual stresses were investigated. The effect of each factor was studied in 3 levels and by 9 experiments. Results of statistical analysis revealed that increase in heat input and radius-thickness ratio would lead to higher values of maximum hoop and axial residual stresses. However, interactions of high level of heat input and a low level of radius-thickness ratio increased inter-pass temperature and consequently caused a sudden raise in maximum values of residual stresses.
KW - API X46 pipe steel
KW - Finite element analysis
KW - Radius to thickness ratio
KW - Residual stresses
KW - Weld heat input
UR - http://www.scopus.com/inward/record.url?scp=85012280212&partnerID=8YFLogxK
U2 - 10.1016/j.ijpvp.2017.01.001
DO - 10.1016/j.ijpvp.2017.01.001
M3 - Article
VL - 150
SP - 62
EP - 71
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
SN - 0308-0161
ER -