A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions
In this paper, a new method is developed to find the ductility ratio in blast walls, resulted by hydrocarbon explosions. In this method, only the explosion energy and distance from the centre of explosion are required to find the damage by using simple predictive models in terms of empirical-type fo...
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/5129274 |
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| author | Majid Aleyaasin |
| author_facet | Majid Aleyaasin |
| author_sort | Majid Aleyaasin |
| collection | DOAJ |
| description | In this paper, a new method is developed to find the ductility ratio in blast walls, resulted by hydrocarbon explosions. In this method, only the explosion energy and distance from the centre of explosion are required to find the damage by using simple predictive models in terms of empirical-type formulas. The explosion model herein is a TNO multiphysic method. This provides the maximum overpressure and pulse duration in terms of the explosion length and distance from explosion centre. Thereafter, the obtained results are combined with the SDOF model of the blast wall to determine the ductility ratio and the damage. By using advanced optimisation techniques, two types of predictive models are found. In the first model, the formula is found in terms of 2 parameters of explosion length and distance from explosion centre. However, the 2nd model has 3 parameters of explosion length, distance, and also the natural period of the blast wall. These predictive models are then used to find explosion damages and ductility ratio. The results are compared with FEM analysis and pressure-impulse (P-I) method. It is shown that both types of models fit well with the outputs of the simulation. Moreover, results of both models are close to FEM analysis. The comparison tables provided in this paper show that, in the asymptotic region of P-I diagrams, results are not accurate. Therefore, this new method is superior to classical pressure-impulse (P-I) diagrams in the literature. Advantage of the new method is the easy damage assessment by using simple empirical-type formulas. Therefore, the researchers can use the method in this paper, for damage assessment in other types of blast resistive structures. |
| format | Article |
| id | doaj-art-527fc647c974425e8e0a8277c21a7129 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-527fc647c974425e8e0a8277c21a71292025-02-03T06:06:10ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/51292745129274A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon ExplosionsMajid Aleyaasin0Lecturer School of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UKIn this paper, a new method is developed to find the ductility ratio in blast walls, resulted by hydrocarbon explosions. In this method, only the explosion energy and distance from the centre of explosion are required to find the damage by using simple predictive models in terms of empirical-type formulas. The explosion model herein is a TNO multiphysic method. This provides the maximum overpressure and pulse duration in terms of the explosion length and distance from explosion centre. Thereafter, the obtained results are combined with the SDOF model of the blast wall to determine the ductility ratio and the damage. By using advanced optimisation techniques, two types of predictive models are found. In the first model, the formula is found in terms of 2 parameters of explosion length and distance from explosion centre. However, the 2nd model has 3 parameters of explosion length, distance, and also the natural period of the blast wall. These predictive models are then used to find explosion damages and ductility ratio. The results are compared with FEM analysis and pressure-impulse (P-I) method. It is shown that both types of models fit well with the outputs of the simulation. Moreover, results of both models are close to FEM analysis. The comparison tables provided in this paper show that, in the asymptotic region of P-I diagrams, results are not accurate. Therefore, this new method is superior to classical pressure-impulse (P-I) diagrams in the literature. Advantage of the new method is the easy damage assessment by using simple empirical-type formulas. Therefore, the researchers can use the method in this paper, for damage assessment in other types of blast resistive structures.http://dx.doi.org/10.1155/2019/5129274 |
| spellingShingle | Majid Aleyaasin A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions Advances in Civil Engineering |
| title | A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions |
| title_full | A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions |
| title_fullStr | A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions |
| title_full_unstemmed | A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions |
| title_short | A Predictive Model for Damage Assessment and Deformation in Blast Walls Resulted by Hydrocarbon Explosions |
| title_sort | predictive model for damage assessment and deformation in blast walls resulted by hydrocarbon explosions |
| url | http://dx.doi.org/10.1155/2019/5129274 |
| work_keys_str_mv | AT majidaleyaasin apredictivemodelfordamageassessmentanddeformationinblastwallsresultedbyhydrocarbonexplosions AT majidaleyaasin predictivemodelfordamageassessmentanddeformationinblastwallsresultedbyhydrocarbonexplosions |