Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening

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dc.contributor.authorGamiet, Nadeemen_ZA
dc.date.accessioned2015-08-10T06:43:36Z
dc.date.available2015-08-10T06:43:36Z
dc.date.issued2015en_ZA
dc.description.abstractOf significant importance to the design, manufacture and maintenance of turbine components is the fatigue life thereof when subjected to variable loading conditions. Research and practical implementation has shown that shot peening considerably increases the fatigue life of a component by introducing compressive residual stresses within the surface layers of the component. This has created a need to develop a numerical model that accurately predicts such residual stresses produced from shot peening. This thesis offers a simplified numerical model depiction of the shot peening process on a target material. A Finite Element based software (ABAQUS) model was employed to simulate the material behaviour and elastic-plastic deformation a metallic material undergoes during shot peening. An experimental platform was established by performing shot peening on material specimens while varying certain shot peening parameters. These parameters included shot size, shot velocity (related to a change in nozzle discharge pressure) as well as standoff (distance between exit nozzle and target material). The experimental data provided the stress profiles both on and beneath the target material surface layers and aided in the model development. Of specific interest was the magnitude of the maximum compressive residual stress developed just below the surface of the material and the depth of the compressive layer formed within the surface layers of the target material.en_ZA
dc.identifier.apacitationGamiet, N. (2015). <i>Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/13680en_ZA
dc.identifier.chicagocitationGamiet, Nadeem. <i>"Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2015. http://hdl.handle.net/11427/13680en_ZA
dc.identifier.citationGamiet, N. 2015. Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Gamiet, Nadeem AB - Of significant importance to the design, manufacture and maintenance of turbine components is the fatigue life thereof when subjected to variable loading conditions. Research and practical implementation has shown that shot peening considerably increases the fatigue life of a component by introducing compressive residual stresses within the surface layers of the component. This has created a need to develop a numerical model that accurately predicts such residual stresses produced from shot peening. This thesis offers a simplified numerical model depiction of the shot peening process on a target material. A Finite Element based software (ABAQUS) model was employed to simulate the material behaviour and elastic-plastic deformation a metallic material undergoes during shot peening. An experimental platform was established by performing shot peening on material specimens while varying certain shot peening parameters. These parameters included shot size, shot velocity (related to a change in nozzle discharge pressure) as well as standoff (distance between exit nozzle and target material). The experimental data provided the stress profiles both on and beneath the target material surface layers and aided in the model development. Of specific interest was the magnitude of the maximum compressive residual stress developed just below the surface of the material and the depth of the compressive layer formed within the surface layers of the target material. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening TI - Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening UR - http://hdl.handle.net/11427/13680 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/13680
dc.identifier.vancouvercitationGamiet N. Numerical analysis of compressive residual stresses in metallic materials as a result of shot peening. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/13680en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mechanical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMechanical Engineeringen_ZA
dc.titleNumerical analysis of compressive residual stresses in metallic materials as a result of shot peeningen_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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