Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads
In this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction exper...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/8/11/926 |
| _version_ | 1797547797756510208 |
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| author | Se-Yun Hwang Min-Seok Kim Jang-Hyun Lee |
| author_facet | Se-Yun Hwang Min-Seok Kim Jang-Hyun Lee |
| author_sort | Se-Yun Hwang |
| collection | DOAJ |
| description | In this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction experienced by the hull during seafaring operations) is presented. The load due to the temperature and self-weight of the piping installed on the deck is also considered. Various operating and load conditions of the LNG piping system are analyzed. Stress analysis is performed by combining various conditions of sustained, occasional, and expansion loads. Stress is assessed using finite element analysis based on beam elements that represent the behavior of the piping. The attributes of the piping system components (such as valves, expansion joints, and supports) are represented in the finite element model while CAESAR-II, a commercial software is used for finite element analysis. Component modeling, load assignment, and load combinations are presented to evaluate pipe stresses under various load conditions. An evaluation model is selected for the piping arrangement of LNG and the evaluated stress is compared with the allowable stress defined by the American Society of Mechanical Engineers (ASME). |
| first_indexed | 2024-03-10T14:49:19Z |
| format | Article |
| id | doaj.art-f2a4da064bc9468f821ebd7403a2e305 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T14:49:19Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-f2a4da064bc9468f821ebd7403a2e3052023-11-20T21:07:03ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-11-0181192610.3390/jmse8110926Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design LoadsSe-Yun Hwang0Min-Seok Kim1Jang-Hyun Lee2Research Institute of Industrial Technology, INHA University, 100 Inha-ro, Michuhol-gu, Incheon 22212, KoreaDepartment of Naval Architecture and Ocean Engineering, INHA University, 100 Inha-ro, Michuhol-gu, Incheon 22212, KoreaDepartment of Naval Architecture and Ocean Engineering, INHA University, 100 Inha-ro, Michuhol-gu, Incheon 22212, KoreaIn this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction experienced by the hull during seafaring operations) is presented. The load due to the temperature and self-weight of the piping installed on the deck is also considered. Various operating and load conditions of the LNG piping system are analyzed. Stress analysis is performed by combining various conditions of sustained, occasional, and expansion loads. Stress is assessed using finite element analysis based on beam elements that represent the behavior of the piping. The attributes of the piping system components (such as valves, expansion joints, and supports) are represented in the finite element model while CAESAR-II, a commercial software is used for finite element analysis. Component modeling, load assignment, and load combinations are presented to evaluate pipe stresses under various load conditions. An evaluation model is selected for the piping arrangement of LNG and the evaluated stress is compared with the allowable stress defined by the American Society of Mechanical Engineers (ASME).https://www.mdpi.com/2077-1312/8/11/926piping systemthermal deformationexpansion jointliquefied natural gas (LNG)sustained loadoperation load |
| spellingShingle | Se-Yun Hwang Min-Seok Kim Jang-Hyun Lee Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads Journal of Marine Science and Engineering piping system thermal deformation expansion joint liquefied natural gas (LNG) sustained load operation load |
| title | Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads |
| title_full | Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads |
| title_fullStr | Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads |
| title_full_unstemmed | Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads |
| title_short | Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads |
| title_sort | thermal stress analysis of process piping system installed on lng vessel subject to hull design loads |
| topic | piping system thermal deformation expansion joint liquefied natural gas (LNG) sustained load operation load |
| url | https://www.mdpi.com/2077-1312/8/11/926 |
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