Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface
Abstract
To ensure reliability of pressure vessels during service it is necessary to (1) know properties of materials used in their design and (2) evaluate vessels' behaviour under different working conditions with satisfying accuracy. Due to various technical and/or technological requirements, nozzles are usually welded on vessel's shell producing geometrical discontinuities that reduce the safety factor. To evaluate their influence, vessels with two different nozzles were experimentally studied and critical areas for crack initiation have been identified by 3D Digital Image Correlation (DIC) method. After that, the numerical analysis of equivalent 3D finite element model was performed and obtained results were compared with experimental values. In the most critical area, next to the one of the nozzles, crack was initiated and then growth of the damage was simulated using extended finite element method (XFEM). In this paper evaluation of stress intensity factors (SIFs) along crack path is pres...ented, as well as the most probable direction of the crack propagation on the shell. Based on SIFs values, critical length of the crack and number of pressure cycles to the final failure were estimated.
Keywords:
XFEM / stress intensity factor / pressure vessel / crack growth / 3D digital image correlationSource:
Eksploatacja I Niezawodnosc-Maintenance and Reliability, 2018, 20, 3, 378-386Publisher:
- Polish Maintenance Soc, Lublin
Funding / projects:
- Development and application of methods and laboratory equipment intended for conformity assessment of technical products (RS-MESTD-Technological Development (TD or TR)-35031)
DOI: 10.17531/ein.2018.3.5
ISSN: 1507-2711
WoS: 000434693200005
Scopus: 2-s2.0-85048531664
Collections
Institution/Community
Mašinski fakultetTY - JOUR AU - Balać, Martina AU - Grbović, Aleksandar AU - Petrović, Aleksandar AU - Popović, Vladimir PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2919 AB - To ensure reliability of pressure vessels during service it is necessary to (1) know properties of materials used in their design and (2) evaluate vessels' behaviour under different working conditions with satisfying accuracy. Due to various technical and/or technological requirements, nozzles are usually welded on vessel's shell producing geometrical discontinuities that reduce the safety factor. To evaluate their influence, vessels with two different nozzles were experimentally studied and critical areas for crack initiation have been identified by 3D Digital Image Correlation (DIC) method. After that, the numerical analysis of equivalent 3D finite element model was performed and obtained results were compared with experimental values. In the most critical area, next to the one of the nozzles, crack was initiated and then growth of the damage was simulated using extended finite element method (XFEM). In this paper evaluation of stress intensity factors (SIFs) along crack path is presented, as well as the most probable direction of the crack propagation on the shell. Based on SIFs values, critical length of the crack and number of pressure cycles to the final failure were estimated. PB - Polish Maintenance Soc, Lublin T2 - Eksploatacja I Niezawodnosc-Maintenance and Reliability T1 - Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface EP - 386 IS - 3 SP - 378 VL - 20 DO - 10.17531/ein.2018.3.5 ER -
@article{ author = "Balać, Martina and Grbović, Aleksandar and Petrović, Aleksandar and Popović, Vladimir", year = "2018", abstract = "To ensure reliability of pressure vessels during service it is necessary to (1) know properties of materials used in their design and (2) evaluate vessels' behaviour under different working conditions with satisfying accuracy. Due to various technical and/or technological requirements, nozzles are usually welded on vessel's shell producing geometrical discontinuities that reduce the safety factor. To evaluate their influence, vessels with two different nozzles were experimentally studied and critical areas for crack initiation have been identified by 3D Digital Image Correlation (DIC) method. After that, the numerical analysis of equivalent 3D finite element model was performed and obtained results were compared with experimental values. In the most critical area, next to the one of the nozzles, crack was initiated and then growth of the damage was simulated using extended finite element method (XFEM). In this paper evaluation of stress intensity factors (SIFs) along crack path is presented, as well as the most probable direction of the crack propagation on the shell. Based on SIFs values, critical length of the crack and number of pressure cycles to the final failure were estimated.", publisher = "Polish Maintenance Soc, Lublin", journal = "Eksploatacja I Niezawodnosc-Maintenance and Reliability", title = "Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface", pages = "386-378", number = "3", volume = "20", doi = "10.17531/ein.2018.3.5" }
Balać, M., Grbović, A., Petrović, A.,& Popović, V.. (2018). Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface. in Eksploatacja I Niezawodnosc-Maintenance and Reliability Polish Maintenance Soc, Lublin., 20(3), 378-386. https://doi.org/10.17531/ein.2018.3.5
Balać M, Grbović A, Petrović A, Popović V. Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface. in Eksploatacja I Niezawodnosc-Maintenance and Reliability. 2018;20(3):378-386. doi:10.17531/ein.2018.3.5 .
Balać, Martina, Grbović, Aleksandar, Petrović, Aleksandar, Popović, Vladimir, "Fem analysis of pressure vessel with an investigation of crack growth on cylindrical surface" in Eksploatacja I Niezawodnosc-Maintenance and Reliability, 20, no. 3 (2018):378-386, https://doi.org/10.17531/ein.2018.3.5 . .