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Design a New Spherical Super Element to Static and Modal Analysis of Spherical Structures

[+] Author Affiliations
Hamid Faghani, M. T. Ahmadian

Sharif University of Technology, Tehran, Iran

Paper No. DETC2011-47151, pp. 493-497; 5 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME


Hollow Spherical Structures such as spherical pressure vessels are widely used in industries. Using faster numerical methods to solve these spherical problems has been one of the research interests in the last decade. Super elements are elements capable of producing the same accurate result in comparison with several conventional elements. In this paper, a new spherical super element is designed and implemented to study the static deformation and modal analysis of a spherical structure. In the static analysis mean of the inner radial displacements of the hollow structure under the internal pressure is evaluated, also performing the modal analysis, natural frequencies of the structure under the specified boundary condition are obtained. Findings are compared with those of conventional finite element methods and very good agreements are achieved. Using two spherical super element result the same displacement in conventional finite element with 2164 three dimensional brick elements.

Copyright © 2011 by ASME



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