Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling
When the buried pipeline is subjected to the external explosion load, stress and deformation will occur. When the stress and deformation value exceed a specific range, it will affect the normal use of the buried pipeline. In this paper, a multiphase coupled model of pipeline, soil and fluid within t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-08-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023057572 |
| _version_ | 1797733008500850688 |
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| author | Ye Lu Yuqi Ding Jiahe Zhang Ming Yang |
| author_facet | Ye Lu Yuqi Ding Jiahe Zhang Ming Yang |
| author_sort | Ye Lu |
| collection | DOAJ |
| description | When the buried pipeline is subjected to the external explosion load, stress and deformation will occur. When the stress and deformation value exceed a specific range, it will affect the normal use of the buried pipeline. In this paper, a multiphase coupled model of pipeline, soil and fluid within the pipeline is established. The penalty function coupling method is used to describe the load between soil and pipeline and the fluid within the pipeline. By specifying the boundary conditions of the coupled system, the multiphase coupled global solution variational principle function of the soil-pipe-fluid is derived. According to the established multiphase coupled calculation method, the numerical simulation analysis of the response of pipeline to external explosion is carried out. The maximum error of the experimental and numerical simulation results is about 5%, which verifies the accuracy of the multiphase coupled calculation method. The soil-pipeline-fluid multiphase coupled numerical calculation model is established to analyze the response of the buried pipeline under the external explosion load. The results show that during the explosion shock wave propagating in the soil, the peak value of the explosion pressure in different positions in the soil of the gas pipeline is greater than that of the oil pipeline. As for the structural response, the maximum radial displacement value of the oil pipeline is reduced by 3.83 mm compared with the gas pipeline, the maximum stress value is reduced by 3.75%. The maximum radial displacement value of the pipeline with a fluid velocity of 1.5 m/s is 2.65 mm larger than that of the pipeline with a fluid velocity of 1 m/s, and the maximum stress value is increased by 5.72%. The deformation resistance and explosion resistance of the oil pipeline are both stronger than that of the gas pipeline. The higher the fluid velocity, the weaker the pipeline's resistance to deformation and explosion will be. |
| first_indexed | 2024-03-12T12:22:46Z |
| format | Article |
| id | doaj.art-97d384f29d644bf58bd6eab59dff409b |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-12T12:22:46Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-97d384f29d644bf58bd6eab59dff409b2023-08-30T05:51:43ZengElsevierHeliyon2405-84402023-08-0198e18549Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase couplingYe Lu0Yuqi Ding1Jiahe Zhang2Ming Yang3College of Mechanical Science and Engineering, Northeast Petroleum University, Heilongjiang, Daqing, 163318, ChinaCorresponding author.; College of Mechanical Science and Engineering, Northeast Petroleum University, Heilongjiang, Daqing, 163318, ChinaCollege of Mechanical Science and Engineering, Northeast Petroleum University, Heilongjiang, Daqing, 163318, ChinaCollege of Mechanical Science and Engineering, Northeast Petroleum University, Heilongjiang, Daqing, 163318, ChinaWhen the buried pipeline is subjected to the external explosion load, stress and deformation will occur. When the stress and deformation value exceed a specific range, it will affect the normal use of the buried pipeline. In this paper, a multiphase coupled model of pipeline, soil and fluid within the pipeline is established. The penalty function coupling method is used to describe the load between soil and pipeline and the fluid within the pipeline. By specifying the boundary conditions of the coupled system, the multiphase coupled global solution variational principle function of the soil-pipe-fluid is derived. According to the established multiphase coupled calculation method, the numerical simulation analysis of the response of pipeline to external explosion is carried out. The maximum error of the experimental and numerical simulation results is about 5%, which verifies the accuracy of the multiphase coupled calculation method. The soil-pipeline-fluid multiphase coupled numerical calculation model is established to analyze the response of the buried pipeline under the external explosion load. The results show that during the explosion shock wave propagating in the soil, the peak value of the explosion pressure in different positions in the soil of the gas pipeline is greater than that of the oil pipeline. As for the structural response, the maximum radial displacement value of the oil pipeline is reduced by 3.83 mm compared with the gas pipeline, the maximum stress value is reduced by 3.75%. The maximum radial displacement value of the pipeline with a fluid velocity of 1.5 m/s is 2.65 mm larger than that of the pipeline with a fluid velocity of 1 m/s, and the maximum stress value is increased by 5.72%. The deformation resistance and explosion resistance of the oil pipeline are both stronger than that of the gas pipeline. The higher the fluid velocity, the weaker the pipeline's resistance to deformation and explosion will be.http://www.sciencedirect.com/science/article/pii/S2405844023057572Buried pipelineExternal explosion loadMultiphase couplingPenalty function couplingStructural responseExplosion resistance |
| spellingShingle | Ye Lu Yuqi Ding Jiahe Zhang Ming Yang Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling Heliyon Buried pipeline External explosion load Multiphase coupling Penalty function coupling Structural response Explosion resistance |
| title | Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| title_full | Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| title_fullStr | Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| title_full_unstemmed | Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| title_short | Study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| title_sort | study on the calculation method and structural dynamic response of buried pipeline subjected to external explosion load based on multiphase coupling |
| topic | Buried pipeline External explosion load Multiphase coupling Penalty function coupling Structural response Explosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023057572 |
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