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The response of honeycomb sandwich panels to blast loads
Numerous studies have been performed in search of structures providing better blast protection and to understand the various effects influencing the structural performance. This thesis reports on an investigation into the behaviour of circular sandwich panels with aluminium honeycomb cores subjected...
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| Format: | Thesis |
| Language: | English |
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Department of Mechanical Engineering
2014
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| _version_ | 1867613460168179713 |
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| access_status_str | Open Access |
| author | Chi, Yunn-Chih (Yvonne) |
| author2 | Nurick, Gerald N |
| author_browse | Chi, Yunn-Chih (Yvonne) Nurick, Gerald N |
| author_facet | Nurick, Gerald N Chi, Yunn-Chih (Yvonne) |
| author_sort | Chi, Yunn-Chih (Yvonne) |
| collection | Thesis |
| description | Numerous studies have been performed in search of structures providing better blast protection and to understand the various effects influencing the structural performance. This thesis reports on an investigation into the behaviour of circular sandwich panels with aluminium honeycomb cores subjected to air blast loading. It focuses on the effect of varying core thickness, plate thickness and panel configuration. In this study, aluminium honeycomb core is sandwiched between mild steel face plates. Quasi-static tensile and compression experiments are performed to characterise the face plates and the honeycombs. Four sandwich panel configurations are proposed and subjected to blast loading. The impulse is generated by detonating plastic explosives at a constant stand-off distance and measured using a ballistic pendulum. The impulse is varied by using different charge masses. It is observed that the panels experience front plate deflection and tearing; honeycomb core crushing and densification; and back plate deflection and tearing. The deformations of the face plates and the cores increased with increasing impulse. Increasing the core thickness delayed the onset of core densification and decreased back plate deflection; and increasing the plate thickness also decreased back plate deflection. The use of an extra sandwich layer helps to provide better structural support but has the penalty of extra mass. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5566 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:36:29.937Z |
| 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:11427/5566 The response of honeycomb sandwich panels to blast loads Chi, Yunn-Chih (Yvonne) Nurick, Gerald N Langdon, GS Numerous studies have been performed in search of structures providing better blast protection and to understand the various effects influencing the structural performance. This thesis reports on an investigation into the behaviour of circular sandwich panels with aluminium honeycomb cores subjected to air blast loading. It focuses on the effect of varying core thickness, plate thickness and panel configuration. In this study, aluminium honeycomb core is sandwiched between mild steel face plates. Quasi-static tensile and compression experiments are performed to characterise the face plates and the honeycombs. Four sandwich panel configurations are proposed and subjected to blast loading. The impulse is generated by detonating plastic explosives at a constant stand-off distance and measured using a ballistic pendulum. The impulse is varied by using different charge masses. It is observed that the panels experience front plate deflection and tearing; honeycomb core crushing and densification; and back plate deflection and tearing. The deformations of the face plates and the cores increased with increasing impulse. Increasing the core thickness delayed the onset of core densification and decreased back plate deflection; and increasing the plate thickness also decreased back plate deflection. The use of an extra sandwich layer helps to provide better structural support but has the penalty of extra mass. 2014-07-31T11:30:22Z 2014-07-31T11:30:22Z 2008 Master Thesis Masters MSc http://hdl.handle.net/11427/5566 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chi, Yunn-Chih (Yvonne) The response of honeycomb sandwich panels to blast loads |
| thesis_degree_str | Master's |
| title | The response of honeycomb sandwich panels to blast loads |
| title_full | The response of honeycomb sandwich panels to blast loads |
| title_fullStr | The response of honeycomb sandwich panels to blast loads |
| title_full_unstemmed | The response of honeycomb sandwich panels to blast loads |
| title_short | The response of honeycomb sandwich panels to blast loads |
| title_sort | response of honeycomb sandwich panels to blast loads |
| url | http://hdl.handle.net/11427/5566 |
| work_keys_str_mv | AT chiyunnchihyvonne theresponseofhoneycombsandwichpanelstoblastloads AT chiyunnchihyvonne responseofhoneycombsandwichpanelstoblastloads |