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Numerical design optimisation for the Karoo Array Telescope
Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2009.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2009
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| _version_ | 1867613935158427648 |
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| access_status_str | Open Access |
| author | Joubert, N. J. D. |
| author2 | Venter, Gerhard |
| author_browse | Joubert, N. J. D. Venter, Gerhard |
| author_facet | Venter, Gerhard Joubert, N. J. D. |
| author_sort | Joubert, N. J. D. |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2009. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2727 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:44:02.133Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2727 Numerical design optimisation for the Karoo Array Telescope Joubert, N. J. D. Venter, Gerhard University of Stellenbosch. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. Karoo Array Telescope Numerical design optimisation Dissertations -- Mechanical engineering Theses -- Mechanical engineering Telescopes -- South Africa Finite element method Structural optimization Mechanical and Mechatronic Engineering Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2009. Although mass minimisation is an important application within structural optimisation, other applications include: (1) concept generation, (2) concept evaluation, (3) design for structural feasibility and (4) data matching. These applications, except data matching, are discussed and illustrated on a prototype design of the Karoo Array Telescope (KAT) antenna. The KAT passed through the design process and a full scale prototype was built, but was found to be too expensive. A detailed finite element model of the finalised design was considered as a test bed for reducing costs. Size-, shape- and topology optimisation are applied to three KAT components, while considering wind, temperature and gravity loads. Structural- and nonstructural constraints are introduced. Coupling of the structural optimisation code with an external analysis program to include non-structural responses and the parallelisation of the sensitivity calculations are presented. It is shown that if a finite element model is available, it is generally possible to apply structural optimisation to improve an existing design. A reduction of 2673 kg steel was accomplished for the existing KAT components. The total cost saving for the project will be significant, when considering that a large amount of antennas will be manufactured. 2009-02-13T13:19:55Z 2010-06-01T08:56:47Z 2009-02-13T13:19:55Z 2010-06-01T08:56:47Z 2009-03 Thesis http://hdl.handle.net/10019.1/2727 en University of Stellenbosch application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Karoo Array Telescope Numerical design optimisation Dissertations -- Mechanical engineering Theses -- Mechanical engineering Telescopes -- South Africa Finite element method Structural optimization Mechanical and Mechatronic Engineering Joubert, N. J. D. Numerical design optimisation for the Karoo Array Telescope |
| title | Numerical design optimisation for the Karoo Array Telescope |
| title_full | Numerical design optimisation for the Karoo Array Telescope |
| title_fullStr | Numerical design optimisation for the Karoo Array Telescope |
| title_full_unstemmed | Numerical design optimisation for the Karoo Array Telescope |
| title_short | Numerical design optimisation for the Karoo Array Telescope |
| title_sort | numerical design optimisation for the karoo array telescope |
| topic | Karoo Array Telescope Numerical design optimisation Dissertations -- Mechanical engineering Theses -- Mechanical engineering Telescopes -- South Africa Finite element method Structural optimization Mechanical and Mechatronic Engineering |
| url | http://hdl.handle.net/10019.1/2727 |
| work_keys_str_mv | AT joubertnjd numericaldesignoptimisationforthekarooarraytelescope |