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A computational implementation of design sensitivity analysis and structural optimisation
Bibliography: pages 118-121.
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| Format: | Thesis |
| Language: | English |
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Department of Mathematics and Applied Mathematics
2016
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| _version_ | 1867613290942693376 |
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| access_status_str | Open Access |
| author | Bothma, André Smith |
| author2 | Ronda, Jacek |
| author_browse | Bothma, André Smith Ronda, Jacek |
| author_facet | Ronda, Jacek Bothma, André Smith |
| author_sort | Bothma, André Smith |
| collection | Thesis |
| description | Bibliography: pages 118-121. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/16106 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:48.261Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Mathematics and Applied Mathematics |
| publisherStr | Department of Mathematics and Applied Mathematics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/16106 A computational implementation of design sensitivity analysis and structural optimisation Bothma, André Smith Ronda, Jacek Applied Mathematics Bibliography: pages 118-121. In the field of computational mechanics, increases in computing power and enhancements in material and kinematic models have enhanced the feasibility of performing structural design optimisation for a wide range of applications. The work presented here was motivated by the current groundswell of research effort in computational optimisation. Design Sensitivity Analysis (DSA) crucially underpins much of structural optimisation and, as such, is focussed on more intently than the optimisation theory itself: various approaches to the Direct Differentiation Method (DDM) DSA procedure are investigated and computationally implemented. The procedures implemented were chosen so as to involve a range of important issues in computational sensitivity analysis, particularly * Shape and non-shape sensitivity analysis, * Total and Updated Lagrange-based DSA, * DSA of displacement and non-displacement based response functionals, * Multiparameter DSA. * DSA for large strain behaviour The primary objectives of this thesis are: I. Development of a design sensitivity formulation which, when discretised, resembles the standard displacement based kinematic element formulation, thus enabling the implementation of design sensitivity analysis in established Finite Element Analysis (FEA) codes as a 'pseudo'-element routine. II. lmplemention of several design sensitivity formulations and structural optimisation into the FEA code ABAQUS as a verification of the first objective. Numerical results provided in this work demonstrate the successful completion of the above-mentioned objectives. The discretised DSA formulations presented, as well as the 'pseudo'-element approach adopted, particularly in the case of shape DSA are entirely original. To the best of the author's knowledge, DSA and DSA-based structural optimisation had never before been attempted with ABAQUS. The research conducted here lays the foundation for potentially very fruitful future work. 2016-01-02T04:38:44Z 2016-01-02T04:38:44Z 1996 Master Thesis Masters MSc http://hdl.handle.net/11427/16106 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science University of Cape Town |
| spellingShingle | Applied Mathematics Bothma, André Smith A computational implementation of design sensitivity analysis and structural optimisation |
| thesis_degree_str | Master's |
| title | A computational implementation of design sensitivity analysis and structural optimisation |
| title_full | A computational implementation of design sensitivity analysis and structural optimisation |
| title_fullStr | A computational implementation of design sensitivity analysis and structural optimisation |
| title_full_unstemmed | A computational implementation of design sensitivity analysis and structural optimisation |
| title_short | A computational implementation of design sensitivity analysis and structural optimisation |
| title_sort | computational implementation of design sensitivity analysis and structural optimisation |
| topic | Applied Mathematics |
| url | http://hdl.handle.net/11427/16106 |
| work_keys_str_mv | AT bothmaandresmith acomputationalimplementationofdesignsensitivityanalysisandstructuraloptimisation AT bothmaandresmith computationalimplementationofdesignsensitivityanalysisandstructuraloptimisation |