Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment
Authors
Međo, Bojan
Rakin, Marko

Arsic, Miodrag
Damjanovic, Ivana
Stefanovic, Ana
Grabulov, Vencislav
Article (Published version)
Metadata
Show full item recordAbstract
The defects in pipe elbows can, depending on their size and position, affect the integrity and safe service, as well as deformation ability of the piping systems in exploitation. Incompletely filled groove, which is the type of defect examined here, was observed by ultrasonic measurement on the pipeline in the regulation system of the hydro power plant Djerdap. Three-dimensional finite element analysis is performed using Simulia Abaqus software package. First, the models with dimensions of the defects observed by non-destructive examination are formed. Stress and strain fields for different loading types are shown and commented. The influence of the defect dimensions on the pipe elbow load-carrying capacity is determined through plastic collapse loads, which are obtained from bending moment - rotation angle diagrams. Twice elastic slope (TES) technique is applied. Additionally, some more severe defects are considered, in the form of sharp pre-cracks at the bottom of the defect; plastic... collapse loads are also determined for these geometries. Both opening and closing bending moments are taken into consideration and the results are discussed and compared to two closed-form solutions from the literature. The influence of the boundary conditions applied for examination of the pipe elbows is
commented.
Keywords:
pipe elbow / incompletely filled groove / in-plane bending moment / finite element method / plastic collapse loadSource:
Journal of Engineering & Processing Management, 2021, 13, 1, 19-28Publisher:
- Faculty of Technology Zvornik, University of East Sarajevo
Funding / projects:
- Micromechanical criteria of damage and fracture (RS-174004)
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Međo, Bojan AU - Rakin, Marko AU - Arsic, Miodrag AU - Damjanovic, Ivana AU - Stefanovic, Ana AU - Grabulov, Vencislav PY - 2021 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6016 AB - The defects in pipe elbows can, depending on their size and position, affect the integrity and safe service, as well as deformation ability of the piping systems in exploitation. Incompletely filled groove, which is the type of defect examined here, was observed by ultrasonic measurement on the pipeline in the regulation system of the hydro power plant Djerdap. Three-dimensional finite element analysis is performed using Simulia Abaqus software package. First, the models with dimensions of the defects observed by non-destructive examination are formed. Stress and strain fields for different loading types are shown and commented. The influence of the defect dimensions on the pipe elbow load-carrying capacity is determined through plastic collapse loads, which are obtained from bending moment - rotation angle diagrams. Twice elastic slope (TES) technique is applied. Additionally, some more severe defects are considered, in the form of sharp pre-cracks at the bottom of the defect; plastic collapse loads are also determined for these geometries. Both opening and closing bending moments are taken into consideration and the results are discussed and compared to two closed-form solutions from the literature. The influence of the boundary conditions applied for examination of the pipe elbows is commented. PB - Faculty of Technology Zvornik, University of East Sarajevo T2 - Journal of Engineering & Processing Management T1 - Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment EP - 28 IS - 1 SP - 19 VL - 13 DO - 10.7251/JEPM2101019M ER -
@article{ author = "Međo, Bojan and Rakin, Marko and Arsic, Miodrag and Damjanovic, Ivana and Stefanovic, Ana and Grabulov, Vencislav", year = "2021", abstract = "The defects in pipe elbows can, depending on their size and position, affect the integrity and safe service, as well as deformation ability of the piping systems in exploitation. Incompletely filled groove, which is the type of defect examined here, was observed by ultrasonic measurement on the pipeline in the regulation system of the hydro power plant Djerdap. Three-dimensional finite element analysis is performed using Simulia Abaqus software package. First, the models with dimensions of the defects observed by non-destructive examination are formed. Stress and strain fields for different loading types are shown and commented. The influence of the defect dimensions on the pipe elbow load-carrying capacity is determined through plastic collapse loads, which are obtained from bending moment - rotation angle diagrams. Twice elastic slope (TES) technique is applied. Additionally, some more severe defects are considered, in the form of sharp pre-cracks at the bottom of the defect; plastic collapse loads are also determined for these geometries. Both opening and closing bending moments are taken into consideration and the results are discussed and compared to two closed-form solutions from the literature. The influence of the boundary conditions applied for examination of the pipe elbows is commented.", publisher = "Faculty of Technology Zvornik, University of East Sarajevo", journal = "Journal of Engineering & Processing Management", title = "Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment", pages = "28-19", number = "1", volume = "13", doi = "10.7251/JEPM2101019M" }
Međo, B., Rakin, M., Arsic, M., Damjanovic, I., Stefanovic, A.,& Grabulov, V.. (2021). Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment. in Journal of Engineering & Processing Management Faculty of Technology Zvornik, University of East Sarajevo., 13(1), 19-28. https://doi.org/10.7251/JEPM2101019M
Međo B, Rakin M, Arsic M, Damjanovic I, Stefanovic A, Grabulov V. Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment. in Journal of Engineering & Processing Management. 2021;13(1):19-28. doi:10.7251/JEPM2101019M .
Međo, Bojan, Rakin, Marko, Arsic, Miodrag, Damjanovic, Ivana, Stefanovic, Ana, Grabulov, Vencislav, "Effect of welded joint imperfection on the load-carrying capacity of pipe elbows subjected to in – plane bending moment" in Journal of Engineering & Processing Management, 13, no. 1 (2021):19-28, https://doi.org/10.7251/JEPM2101019M . .