On dimensionless loading parameters for close-in blasts
Close-range blasts pose a threat through severe damage to structures and injury or death. In this work, the spatial and temporal descriptions of a localised blast load are presented using 6 non-dimensional parameters. These are found to be solely functions of the charge stand-off distance to diamete...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MULTIPHYSICS
2016-10-01
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| Series: | International Journal of Multiphysics |
| Online Access: | http://journal.multiphysics.org/index.php/IJM/article/view/286 |
| _version_ | 1797719278377500672 |
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| author | K Micallef A Fallah D Pope M Moatamedi L Louca |
| author_facet | K Micallef A Fallah D Pope M Moatamedi L Louca |
| author_sort | K Micallef |
| collection | DOAJ |
| description | Close-range blasts pose a threat through severe damage to structures and injury or death. In this work, the spatial and temporal descriptions of a localised blast load are presented using 6 non-dimensional parameters. These are found to be solely functions of the charge stand-off distance to diameter ratio for a cylindrically-shaped charge.
Numerical simulations of a localised blast are performed using AUTODYN, where the pressure variation on a rigid barrier for various charge stand-off/diameter combinations is obtained. The least-square regression is then utilised to obtain the relationship between stand-off/diameter ratio and dimensionless loading parameters. The relevant expressions and dimensionless charts are presented.
The proposed equations are verified by comparing experimental data with numerical results obtained by finite element analysis (FEA) of blast loaded steel plates (using the user-defined subroutine VDLOAD implemented in the FEA package ABAQUS/Explicit). Excellent correlation of the measured permanent displacement with numerically predicted results is obtained. |
| first_indexed | 2024-03-12T09:02:31Z |
| format | Article |
| id | doaj.art-489426641d4d42389e87240087385f51 |
| institution | Directory Open Access Journal |
| issn | 1750-9548 2048-3961 |
| language | English |
| last_indexed | 2024-03-12T09:02:31Z |
| publishDate | 2016-10-01 |
| publisher | MULTIPHYSICS |
| record_format | Article |
| series | International Journal of Multiphysics |
| spelling | doaj.art-489426641d4d42389e87240087385f512023-09-02T15:32:27ZengMULTIPHYSICSInternational Journal of Multiphysics1750-95482048-39612016-10-019210.1260/1750-9548.9.2.171298On dimensionless loading parameters for close-in blastsK Micallef0A Fallah1D Pope2M Moatamedi3L Louca4Foster and Partners, Riverside, Hester Road, London, SW11 4AN, U.K.Department of Aeronautics, Roderic Hill Building, Imperial College London, London, SW7 2AZ, U.K.Physical Sciences Research Department, D.S.T.L., Porton Down, Salisbury, Wiltshire, SP4 0JQ, U.K.Centre for Nuclear Engineering, Department of Materials, Bessemer Building, Imperial College London, London SW7 2AZ, U.K.Department of Civil Engineering, Skempton Building, Imperial College London, London, SW7 2AZ, U.K.Close-range blasts pose a threat through severe damage to structures and injury or death. In this work, the spatial and temporal descriptions of a localised blast load are presented using 6 non-dimensional parameters. These are found to be solely functions of the charge stand-off distance to diameter ratio for a cylindrically-shaped charge. Numerical simulations of a localised blast are performed using AUTODYN, where the pressure variation on a rigid barrier for various charge stand-off/diameter combinations is obtained. The least-square regression is then utilised to obtain the relationship between stand-off/diameter ratio and dimensionless loading parameters. The relevant expressions and dimensionless charts are presented. The proposed equations are verified by comparing experimental data with numerical results obtained by finite element analysis (FEA) of blast loaded steel plates (using the user-defined subroutine VDLOAD implemented in the FEA package ABAQUS/Explicit). Excellent correlation of the measured permanent displacement with numerically predicted results is obtained.http://journal.multiphysics.org/index.php/IJM/article/view/286 |
| spellingShingle | K Micallef A Fallah D Pope M Moatamedi L Louca On dimensionless loading parameters for close-in blasts International Journal of Multiphysics |
| title | On dimensionless loading parameters for close-in blasts |
| title_full | On dimensionless loading parameters for close-in blasts |
| title_fullStr | On dimensionless loading parameters for close-in blasts |
| title_full_unstemmed | On dimensionless loading parameters for close-in blasts |
| title_short | On dimensionless loading parameters for close-in blasts |
| title_sort | on dimensionless loading parameters for close in blasts |
| url | http://journal.multiphysics.org/index.php/IJM/article/view/286 |
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