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Design a new spherical super element to static and modal analysis of spherical structures

Faghani, H ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1115/DETC2011-47151
  3. Publisher: 2011
  4. Abstract:
  5. 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
  6. Keywords:
  7. Spherical super element ; Static and modal analysis ; Brick elements ; Finite Element ; Hollow structure ; Internal Pressure ; Radial displacements ; Spherical structures ; Static deformations ; Super elements ; Design ; Finite element method ; Modal analysis ; Static analysis ; Spheres
  8. Source: Proceedings of the ASME Design Engineering Technical Conference, 28 August 2011 through 31 August 2011 ; Volume 1, Issue PARTS A AND B , August , 2011 , Pages 493-497 ; 9780791854785 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1639122