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The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression
Includes abstract.
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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_ | 1867613263529771008 |
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| access_status_str | Open Access |
| author | Van der Westhuizen, Anriëtte |
| author2 | Nurick, Gerald N |
| author_browse | Nurick, Gerald N Van der Westhuizen, Anriëtte |
| author_facet | Nurick, Gerald N Van der Westhuizen, Anriëtte |
| author_sort | Van der Westhuizen, Anriëtte |
| collection | Thesis |
| description | Includes abstract. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5459 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:21.255Z |
| 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:11427/5459 The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression Van der Westhuizen, Anriëtte Nurick, Gerald N Mechanical Engineering Includes abstract. Includes bibliographical references (p. 245-253). Conventional Hopkinson bar experiments resulted in a specimen strain rate that decreases beyond reaching a maximum value at the rise time. The variation in dynamic strain rate was rectified by shaping the Hopkinson bar input pulse with a reusable, conical striker bar. The hypothesis investigated was that a varying strain rate history could result in the measurement of a smeared response for materials with significant strain rate sensitivity. Results indicate that nonuniform, dynamic strain rates result in irregular stress-strain curves; however the stress-strain responses comprise the same corridor as the constant strain rate responses. Bovine cortical bone exhibits significant strain rate sensitivity, with distinct corridors of quasi-static and dynamic stress-strain response. Fracture occurs at a higher stress for both increasing strain rate and bone density. A microstructural investigation indicated that longitudinal compression of bovine bone leads to the formation of shear bands and that fracture depends on the orientation of the vascular porosity. 2014-07-31T11:18:06Z 2014-07-31T11:18:06Z 2008 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/5459 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Mechanical Engineering Van der Westhuizen, Anriëtte The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| thesis_degree_str | Doctoral |
| title | The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| title_full | The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| title_fullStr | The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| title_full_unstemmed | The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| title_short | The strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| title_sort | strain rate dependent mechanical properties and modelling of bovine cortical bone in compression |
| topic | Mechanical Engineering |
| url | http://hdl.handle.net/11427/5459 |
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