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Impulse loading of near-field shallow-buried explosions
Includes bibliographical references (leaves 202-208).
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Mechanical Engineering
2014
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| _version_ | 1867613212312076288 |
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| access_status_str | Open Access |
| author | Beetge, Frans Jacobus |
| author2 | Nurick, Gerald N |
| author_browse | Beetge, Frans Jacobus Nurick, Gerald N |
| author_facet | Nurick, Gerald N Beetge, Frans Jacobus |
| author_sort | Beetge, Frans Jacobus |
| collection | Thesis |
| description | Includes bibliographical references (leaves 202-208). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5555 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:33.381Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Mechanical Engineering |
| publisherStr | Department of Mechanical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/5555 Impulse loading of near-field shallow-buried explosions Beetge, Frans Jacobus Nurick, Gerald N Mechanical Engineering Includes bibliographical references (leaves 202-208). Prediction of the total impulse for a mine-protected vehicle must be empirically determined for South African Paardefontein soil pit soil at the start-up phase of a new vehicle project, particularly when experimental data are not yet available for the calibration of computational efforts. The total impulse on a mine-protected vehicle is influenced by a number of factors, such as size of the exposed target area, explosive mass, explosive diameter to height ratio, standoff distance, depth of burial, and soil properties. This investigation entails the development of an empirical equation for predicting total impulse by applying regression analysis. A series of comparative test results were obtained with the Scientific Instrumented Impulse Measurement Apparatus (SIIMA) for TNT equivalent surrogate mines of 2.13 kg - 8 kg mass and diameter to height ratio of 5: 1, and are reported. The lethal aspects of buried mines (target loading mechanisms), such as the detonation shock load, impact load and distributed load, are identified and discussed. Important parameters influencing anti-vehicular blasts, such as standoff distance, soil effects, mine composition and geometry and target shape, are investigated and reported. In conclusion, a SIIMA empirical equation is established which, although limited in standoff distance, can be used as an affordable and quick tool to calculate the vertical impulse on a flat bottom mine-protected vehicle. The SIIMA results show reasonable agreement with the published data of Westine et al (1985) (Braid [1], Williams et al [2] and Williams and Poon [3]), and with the computational predictions provided by the CSIR DPSS-LS. The results provide a better understanding of the complex behaviour of shallow-buried mines in dry sand as an anti-vehicular mine threat, when considering parameters such as standoff distance and depth of burial for constant conditions of explosive aspect ratio (diameter to height values). 2014-07-31T11:29:09Z 2014-07-31T11:29:09Z 2008 Master Thesis Masters MSc http://hdl.handle.net/11427/5555 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Mechanical Engineering Beetge, Frans Jacobus Impulse loading of near-field shallow-buried explosions |
| thesis_degree_str | Master's |
| title | Impulse loading of near-field shallow-buried explosions |
| title_full | Impulse loading of near-field shallow-buried explosions |
| title_fullStr | Impulse loading of near-field shallow-buried explosions |
| title_full_unstemmed | Impulse loading of near-field shallow-buried explosions |
| title_short | Impulse loading of near-field shallow-buried explosions |
| title_sort | impulse loading of near field shallow buried explosions |
| topic | Mechanical Engineering |
| url | http://hdl.handle.net/11427/5555 |
| work_keys_str_mv | AT beetgefransjacobus impulseloadingofnearfieldshallowburiedexplosions |