Overstraining of flush plain cross-bored cylinders

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dc.contributor.author Kihiu, J.M.
dc.contributor.author Rading, G.O.
dc.contributor.author Mutuli, S.M.
dc.date.accessioned 2012-09-24T09:58:56Z
dc.date.accessioned 2013-07-19T07:42:42Z
dc.date.available 2012-09-24T09:58:56Z
dc.date.available 2013-07-19T07:42:42Z
dc.date.issued 2004-02-01
dc.identifier.citation http://pic.sagepub.com/content/218/2/143.refs.html en_US
dc.identifier.uri http://pic.sagepub.com/content/218/2/143
dc.identifier.uri http://hdl.handle.net/123456789/1523
dc.identifier.uri http://hdl.handle.net/123456789/708
dc.description Proceedings of the Institution of Mechanical Engineers en_US
dc.description.abstract A three-dimensional nite element method computer program was developed to establish the elastic–plastic, residual and service stress distributions in thick-walled cylinders with ush and non-protruding plain cross bores under internal pressure. The displacement formulation and eightnoded brick isoparametric elements were used. The incremental theory of plasticity with a 5 per cent yield condition (an element is assumed to have yielded when the effective stress is within 5 per cent of the material yield stress) and von Mises yield criterion were assumed. The frontal solution technique was used. The incipient yield pressure and the pressure resulting in a 0.3 per cent overstrain ratio were established for various cylinder thickness ratios and cross bore–main bore radius ratios. For a thickness ratio of 2.25 and a cross bore–main bore radius ratio of 0.1, the stresses were determined for varying overstrain and an optimum overstrain ratio of 37 per cent was established. To nd the accuracy of the results, the more stringent yield condition of 0.5 per cent was also considered. The bene ts of autofrettage were presented and alternative autofrettage and yield condition procedures proposed. en_US
dc.description.sponsorship Department of Mechanical Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya and Department of Mechanical Engineering, University of Nairobi, Kenya en_US
dc.language.iso en en_US
dc.publisher SAGE en_US
dc.relation.ispartofseries Journal of Mechanical Engineering Science 2004;vol. 218 no. 2
dc.subject overstrain ratio en_US
dc.subject fl ush plain cross-bored cylinders en_US
dc.subject autofrettage en_US
dc.subject stress en_US
dc.title Overstraining of flush plain cross-bored cylinders en_US
dc.type Article en_US

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