Loading...

Elastic-plastic behavior of sandwich cylindrical shell panels with a flexible core

Shokrollahi, H ; Sharif University of Technology | 2017

872 Viewed
  1. Type of Document: Article
  2. DOI: 10.1177/0954406216642482
  3. Publisher: SAGE Publications Ltd , 2017
  4. Abstract:
  5. The linear static elastic-plastic behavior of sandwich cylindrical shell panels under a generally distributed loading with thick flexible core is studied. The core modeling is based on high-order theory of sandwich structures in which the in-plane stresses of the core are neglected. The faces are modeled based on Kirchhoff-Love shell theory. The materials of the faces and the core are assumed to be isotropic with linear work hardening behavior. The incremental Prandtl-Reuss plastic flow theory is used in this analysis. Using the principle of virtual displacements, the governing equations are derived and solved for any sort of boundary conditions based on elastic-plastic harmonic differential quadrature method. To validate the results of present study, various responses in different sandwich shell panel configurations are compared with the results from finite element software Ansys. The effect of core flexibility and its plastic properties as well as the initiation of yield in faces and the core are studied in detail. © Institution of Mechanical Engineers
  6. Keywords:
  7. Harmonic differential quadrature method ; Sandwich cylindrical shell panels ; Cylinders (shapes) ; Differentiation (calculus) ; Finite element method ; Hardening ; Sandwich structures ; Shells (structures) ; Strain hardening ; Structural panels ; Elastic-Plastic ; Flexible core ; Harmonic differential quadrature ; Linear work hardening ; Sandwich cylindrical shells ; Elastoplasticity
  8. Source: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science ; Volume 231, Issue 2 , 2017 , Pages 223-241 ; 09544062 (ISSN)
  9. URL: http://journals.sagepub.com/doi/abs/10.1177/0954406216642482