Abstract
A lot of welded joints are required to connect the junctions of components in the complex piping system. The structural integrity assessment on welded pipes is especially important, because the weldments are susceptible to material discontinuities, flaws and residual stresses. Finite element (FE) damage analysis can be useful and effective method for an accurate assessment on extensive structures. For the case of welded joint, the numerical method is necessarily required to assess complex features because of material discontinuities and flaws. This study provides a simple numerical method to simulate ductile tearing in welded full-scale pipes. Stressmodified fracture strain model is applied to finite element analysis with a stress reduction technique. An element-sizedependent critical damage model is also implemented in the fullscale pipe simulations. From the results of simulation, deformation response and characteristic loads are compared with experimentally measured values to verify the application of damage model on weld material. As a result, the predictions of finite element damage analysis are in good agreement with experiments.
| Original language | English |
|---|---|
| Title of host publication | Materials and Fabrication |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791850428 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
| Externally published | Yes |
| Event | ASME 2016 Pressure Vessels and Piping Conference, PVP 2016 - Vancouver, Canada Duration: 2016 Jul 17 → 2016 Jul 21 |
Publication series
| Name | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
|---|---|
| Volume | 6A-2016 |
| ISSN (Print) | 0277-027X |
Conference
| Conference | ASME 2016 Pressure Vessels and Piping Conference, PVP 2016 |
|---|---|
| Country | Canada |
| City | Vancouver |
| Period | 16/7/17 → 16/7/21 |
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ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Application of stress-modified fracture strain model to full-scale pipes with a circumferential crack in the center of welds. / Ryu, Ho Wan; Jung, Hyun Woo; Kim, Hune Tae; Kim, Yun Jae.
Materials and Fabrication. American Society of Mechanical Engineers (ASME), 2016. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6A-2016).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Application of stress-modified fracture strain model to full-scale pipes with a circumferential crack in the center of welds
AU - Ryu, Ho Wan
AU - Jung, Hyun Woo
AU - Kim, Hune Tae
AU - Kim, Yun Jae
PY - 2016/1/1
Y1 - 2016/1/1
N2 - A lot of welded joints are required to connect the junctions of components in the complex piping system. The structural integrity assessment on welded pipes is especially important, because the weldments are susceptible to material discontinuities, flaws and residual stresses. Finite element (FE) damage analysis can be useful and effective method for an accurate assessment on extensive structures. For the case of welded joint, the numerical method is necessarily required to assess complex features because of material discontinuities and flaws. This study provides a simple numerical method to simulate ductile tearing in welded full-scale pipes. Stressmodified fracture strain model is applied to finite element analysis with a stress reduction technique. An element-sizedependent critical damage model is also implemented in the fullscale pipe simulations. From the results of simulation, deformation response and characteristic loads are compared with experimentally measured values to verify the application of damage model on weld material. As a result, the predictions of finite element damage analysis are in good agreement with experiments.
AB - A lot of welded joints are required to connect the junctions of components in the complex piping system. The structural integrity assessment on welded pipes is especially important, because the weldments are susceptible to material discontinuities, flaws and residual stresses. Finite element (FE) damage analysis can be useful and effective method for an accurate assessment on extensive structures. For the case of welded joint, the numerical method is necessarily required to assess complex features because of material discontinuities and flaws. This study provides a simple numerical method to simulate ductile tearing in welded full-scale pipes. Stressmodified fracture strain model is applied to finite element analysis with a stress reduction technique. An element-sizedependent critical damage model is also implemented in the fullscale pipe simulations. From the results of simulation, deformation response and characteristic loads are compared with experimentally measured values to verify the application of damage model on weld material. As a result, the predictions of finite element damage analysis are in good agreement with experiments.
UR - http://www.scopus.com/inward/record.url?scp=85006409795&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006409795&partnerID=8YFLogxK
U2 - 10.1115/PVP2016-63546
DO - 10.1115/PVP2016-63546
M3 - Conference contribution
AN - SCOPUS:85006409795
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - Materials and Fabrication
PB - American Society of Mechanical Engineers (ASME)
ER -