Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading
The structural response of a single-layer reticulated dome to external explosions is shaped by many variables, and the associated uncertainties imply non-deterministic results. Existing deterministic methods for predicting the consequences of specific explosions do not account for these uncertaintie...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-05-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914722000289 |
| _version_ | 1797836768905527296 |
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| author | Shao-bo Qi Guang-yan Huang Xu-dong Zhi Feng Fan |
| author_facet | Shao-bo Qi Guang-yan Huang Xu-dong Zhi Feng Fan |
| author_sort | Shao-bo Qi |
| collection | DOAJ |
| description | The structural response of a single-layer reticulated dome to external explosions is shaped by many variables, and the associated uncertainties imply non-deterministic results. Existing deterministic methods for predicting the consequences of specific explosions do not account for these uncertainties. Therefore, the impact of the uncertainties associated with these input variables on the structures’ response needs to be studied and quantified. In this study, a parametric uncertainty analysis was conducted first. Then, local and global sensitivity analyses were carried out to identify the drivers of the structural dynamic response. A probabilistic structural response model was established based on sensitive variables and a reasonable sample size. Furthermore, some deterministic empirical methods for explosion-resistance design, including the plane blast load model of CONWEP, the curved blast load model under the 50% assurance level, and the 20% mass-increased method, were used for evaluating their reliability. The results of the analyses revealed that the structural response of a single-layer reticulated dome to an external blast loading is lognormally distributed. Evidently, the MB0.5 method based on the curved reflector load model yielded results with a relatively stable assurance rate and reliability, but CONWEP did not; thus, the 1.2MB0.5 method can be used for making high-confidence simple predictions. In addition, the results indicated that the structural response is very sensitive to the explosion parameters. Based on these results, it is suggested that for explosion proofing, setting up a defensive barrier is more effective than structural strengthening. |
| first_indexed | 2024-04-09T15:14:15Z |
| format | Article |
| id | doaj.art-b1c9d68de1ba49f9a5a083939d911945 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-04-09T15:14:15Z |
| publishDate | 2023-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-b1c9d68de1ba49f9a5a083939d9119452023-04-30T06:07:43ZengKeAi Communications Co., Ltd.Defence Technology2214-91472023-05-0123152163Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loadingShao-bo Qi0Guang-yan Huang1Xu-dong Zhi2Feng Fan3State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, PR ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, PR China; Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, China; Corresponding author. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, PR China.Key Lab of Structure Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, 150090, ChinaKey Lab of Structure Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, 150090, ChinaThe structural response of a single-layer reticulated dome to external explosions is shaped by many variables, and the associated uncertainties imply non-deterministic results. Existing deterministic methods for predicting the consequences of specific explosions do not account for these uncertainties. Therefore, the impact of the uncertainties associated with these input variables on the structures’ response needs to be studied and quantified. In this study, a parametric uncertainty analysis was conducted first. Then, local and global sensitivity analyses were carried out to identify the drivers of the structural dynamic response. A probabilistic structural response model was established based on sensitive variables and a reasonable sample size. Furthermore, some deterministic empirical methods for explosion-resistance design, including the plane blast load model of CONWEP, the curved blast load model under the 50% assurance level, and the 20% mass-increased method, were used for evaluating their reliability. The results of the analyses revealed that the structural response of a single-layer reticulated dome to an external blast loading is lognormally distributed. Evidently, the MB0.5 method based on the curved reflector load model yielded results with a relatively stable assurance rate and reliability, but CONWEP did not; thus, the 1.2MB0.5 method can be used for making high-confidence simple predictions. In addition, the results indicated that the structural response is very sensitive to the explosion parameters. Based on these results, it is suggested that for explosion proofing, setting up a defensive barrier is more effective than structural strengthening.http://www.sciencedirect.com/science/article/pii/S2214914722000289Dome structureBlast load uncertaintySensitivity analysisProbabilistic investigationReliability evaluation |
| spellingShingle | Shao-bo Qi Guang-yan Huang Xu-dong Zhi Feng Fan Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading Defence Technology Dome structure Blast load uncertainty Sensitivity analysis Probabilistic investigation Reliability evaluation |
| title | Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading |
| title_full | Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading |
| title_fullStr | Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading |
| title_full_unstemmed | Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading |
| title_short | Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading |
| title_sort | sensitivity analysis and probability modelling of the structural response of a single layer reticulated dome subjected to an external blast loading |
| topic | Dome structure Blast load uncertainty Sensitivity analysis Probabilistic investigation Reliability evaluation |
| url | http://www.sciencedirect.com/science/article/pii/S2214914722000289 |
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