Effects of local reinforcement on nozzles in dished ends

D H Nash, J Hitchen

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Abstract

The results of a parametric design study, to determine the optimum diameter of reinforcing pad for nozzles in the knuckle region of an ellipsoidal pressure vessel head are presented herein. The study utilised a linear elastic finite element model, created using ANSYS finite element analysis software. Nozzle parameters of diameter, offset, and wall thickness were varied to ensure the results obtained were achieved through a thorough analysis. Optimum pad sizes were obtained for thrust, in plane moment and out-of-plane moment nozzle loads. Design curves were produced, allowing maximum permitted applied stress, to be calculated for any nozzle size subject to one of the three loading conditions. Recommendations for allowable offset and treatment of loading combinations are also presented.
Original languageEnglish
Pages1-13
Number of pages13
Publication statusPublished - 20 Sep 2009
Event12th International Conference on Pressure Vessel Technology, ICPVT-12 - Jeju Island, South Korea
Duration: 20 Sep 200923 Sep 2009

Conference

Conference12th International Conference on Pressure Vessel Technology, ICPVT-12
CityJeju Island, South Korea
Period20/09/0923/09/09

Keywords

  • local reinforcement
  • nozzles
  • dished ends
  • pressure vessels

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  • Cite this

    Nash, D. H., & Hitchen, J. (2009). Effects of local reinforcement on nozzles in dished ends. 1-13. Paper presented at 12th International Conference on Pressure Vessel Technology, ICPVT-12, Jeju Island, South Korea, .