High-order modeling of circular cylindrical composite sandwich shells with a transversely compliant core subjected to low velocity impact

S.M.R. Khalili, O. Rahmani, K. Malekzadeh Fard, O.T. Thomsen

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

In this study, a high-order model for the analysis of circular cylindrical composite sandwich shells subjected to low-velocity impact loads is presented. The sandwich shell is composed of two composite face sheets and a transversely compliant core. The impact behavior of the cylindrical composite sandwich shells is described by a high-order sandwich shell theory. The interaction between the impactor body and the sandwich shell is approximated using a spring mass model. The present analysis is based on an iteration procedure, and yields analytic functions describing the contact force history. The contact force is considered to be distributed uniformly over a contact patch, the size of which depends on the magnitude of the impact load as well as the elastic properties and geometry of the impactor. Finally, the obtained results have been compared with the available experimental results, and a good correlation has been found.
Original languageEnglish
Pages (from-to)680-695
Number of pages16
JournalMechanics of Advanced Materials and Structures
Volume21
Issue number8
Publication statusPublished - 1 Jun 2014

Keywords

  • composite sandwich structures, transversely compliant core, high-order sandwich model, circular cylindrical shell, elasticity solution

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