The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii
This paper reports results from an experimental and computational study on the influence of bend radius and internal angle on the damage and impulse transfer characteristics of flexible steel V-structures subjected to localized explosion loading. This issue has bearing on the manufacturing of V-hull...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/3/1293 |
| _version_ | 1827760551267139584 |
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| author | Vinay R. Shekhar Christopher J. von Klemperer Genevieve S. Langdon |
| author_facet | Vinay R. Shekhar Christopher J. von Klemperer Genevieve S. Langdon |
| author_sort | Vinay R. Shekhar |
| collection | DOAJ |
| description | This paper reports results from an experimental and computational study on the influence of bend radius and internal angle on the damage and impulse transfer characteristics of flexible steel V-structures subjected to localized explosion loading. This issue has bearing on the manufacturing of V-hulls used for Mine Resistant Ambush Protected vehicles used around the world. Global impulse transfer, damage and transient deformation were measured during small-scale explosive detonations on 1:8-scale V-structures. The work found that increasing the bend radius to values that can be used in practical manufacturing generated damage that was less localized than the damage observed in V-structures with tighter bend radii. High-speed imaging was able to measure transient deformation that was maximal in the centre, and lower elastic post-peak vibration magnitudes at high charge masses. The impulse transfer increased as the bend radius increased and the internal V-angle increased. Since V-structures with tighter bend radii exhibit less permanent deformation and higher deformation gradients, they will be more prone to localized ruptures when deployed for blast protection, whereas structures with larger tip radii will need a larger region of the V-structure repaired after a blast event but may be less prone to rupturing when the blast loading is localized. |
| first_indexed | 2024-03-11T09:54:06Z |
| format | Article |
| id | doaj.art-7f9129acb40543ebace0a48e5f881528 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:54:06Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-7f9129acb40543ebace0a48e5f8815282023-11-16T16:03:21ZengMDPI AGApplied Sciences2076-34172023-01-01133129310.3390/app13031293The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend RadiiVinay R. Shekhar0Christopher J. von Klemperer1Genevieve S. Langdon2Blast Impact and Survivability Research Unit, Department of Mechanical Engineering, University of Cape Town, Rondebosch, Cape Town 7700, South AfricaDepartment of Mechanical Engineering, University of Cape Town, Rondebosch, Cape Town 7700, South AfricaBlast Impact and Survivability Research Unit, Department of Mechanical Engineering, University of Cape Town, Rondebosch, Cape Town 7700, South AfricaThis paper reports results from an experimental and computational study on the influence of bend radius and internal angle on the damage and impulse transfer characteristics of flexible steel V-structures subjected to localized explosion loading. This issue has bearing on the manufacturing of V-hulls used for Mine Resistant Ambush Protected vehicles used around the world. Global impulse transfer, damage and transient deformation were measured during small-scale explosive detonations on 1:8-scale V-structures. The work found that increasing the bend radius to values that can be used in practical manufacturing generated damage that was less localized than the damage observed in V-structures with tighter bend radii. High-speed imaging was able to measure transient deformation that was maximal in the centre, and lower elastic post-peak vibration magnitudes at high charge masses. The impulse transfer increased as the bend radius increased and the internal V-angle increased. Since V-structures with tighter bend radii exhibit less permanent deformation and higher deformation gradients, they will be more prone to localized ruptures when deployed for blast protection, whereas structures with larger tip radii will need a larger region of the V-structure repaired after a blast event but may be less prone to rupturing when the blast loading is localized.https://www.mdpi.com/2076-3417/13/3/1293explosive chargestructural responseV-structuresblast testingnumerical modellingblast impulse |
| spellingShingle | Vinay R. Shekhar Christopher J. von Klemperer Genevieve S. Langdon The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii Applied Sciences explosive charge structural response V-structures blast testing numerical modelling blast impulse |
| title | The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii |
| title_full | The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii |
| title_fullStr | The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii |
| title_full_unstemmed | The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii |
| title_short | The Damage and Impulse Transfer Characteristics of Flexible Steel V-Structures with Large Bend Radii |
| title_sort | damage and impulse transfer characteristics of flexible steel v structures with large bend radii |
| topic | explosive charge structural response V-structures blast testing numerical modelling blast impulse |
| url | https://www.mdpi.com/2076-3417/13/3/1293 |
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