The study of creep in machine elements using finite element methods

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dc.contributor.advisorPenny, R Ken_ZA
dc.contributor.authorWeber, Marc Antonen_ZA
dc.date.accessioned2016-09-28T18:56:47Z
dc.date.available2016-09-28T18:56:47Z
dc.date.issued1990en_ZA
dc.descriptionBibliography: pages 92-98.en_ZA
dc.description.abstractIn this thesis a simplified analysis procedure is developed, in which creep laws are decoupled from damage laws, for the purposb of constructing methods of use in the early stages of high temperature design. The procedure is based on the creep and damage laws proposed by Kachanov and Rabotnov. The creep laws are normalised. with respect to a convenient normalising stress. As a consequence of this normalisation, the dependence of the creep law on the stress constant, the time and temperature functions, and the actual load level is removed. In addition, if the reference stress of the component is chosen as the normalising stress, the creep law becomes insensitive to the stress exponent. The non-dimensional creep laws are then implemented in a standard finite element scheme, from which the results of a stationary state creep analysis are then in non-dimensional form. In order to estimate rupture times, the maximum stationary stresses in a component are used together with the damage laws. Conservative failure criteria are derived from the creep and damage laws to extend the method to residual life assessment and damage monitoring. The procedure is illustrated and tested against simple examples and case studies.en_ZA
dc.identifier.apacitationWeber, M. A. (1990). <i>The study of creep in machine elements using finite element methods</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Research in Computational and Applied Mechanics (CERECAM). Retrieved from http://hdl.handle.net/11427/21954en_ZA
dc.identifier.chicagocitationWeber, Marc Anton. <i>"The study of creep in machine elements using finite element methods."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Research in Computational and Applied Mechanics (CERECAM), 1990. http://hdl.handle.net/11427/21954en_ZA
dc.identifier.citationWeber, M. 1990. The study of creep in machine elements using finite element methods. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Weber, Marc Anton AB - In this thesis a simplified analysis procedure is developed, in which creep laws are decoupled from damage laws, for the purposb of constructing methods of use in the early stages of high temperature design. The procedure is based on the creep and damage laws proposed by Kachanov and Rabotnov. The creep laws are normalised. with respect to a convenient normalising stress. As a consequence of this normalisation, the dependence of the creep law on the stress constant, the time and temperature functions, and the actual load level is removed. In addition, if the reference stress of the component is chosen as the normalising stress, the creep law becomes insensitive to the stress exponent. The non-dimensional creep laws are then implemented in a standard finite element scheme, from which the results of a stationary state creep analysis are then in non-dimensional form. In order to estimate rupture times, the maximum stationary stresses in a component are used together with the damage laws. Conservative failure criteria are derived from the creep and damage laws to extend the method to residual life assessment and damage monitoring. The procedure is illustrated and tested against simple examples and case studies. DA - 1990 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1990 T1 - The study of creep in machine elements using finite element methods TI - The study of creep in machine elements using finite element methods UR - http://hdl.handle.net/11427/21954 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21954
dc.identifier.vancouvercitationWeber MA. The study of creep in machine elements using finite element methods. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Research in Computational and Applied Mechanics (CERECAM), 1990 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21954en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Research in Computational and Applied Mechanics (CERECAM)en_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMaterials - Creep - Mathematical modelsen_ZA
dc.subject.otherMechanical Engineeringen_ZA
dc.titleThe study of creep in machine elements using finite element methodsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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