Indentation of rigidly supported sandwich beams with foam cores exhibiting non-linear compressive behaviour.

Giuseppe Pitarresi, Joao Pedro Guimaraes Amorim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A generalized analytical approach to investigate the indentation of sandwich beams under concentrated loads is presented, based on the Winkler foundation theory. A segment-wise model is implemented to the case of fully backed sandwich beams with polymeric foam cores exhibiting generic non-linear compressive behaviours. Closed-form analytical solutions of the indentation curve are obtained for simplified foam compression behaviours: elastic-perfectly-plastic, bilinear and bilinear-perfectly-plastic. Analytical predictions are compared with experimental data from sandwiches employing foam cores with peculiar non-linear behaviours. The proposed models are found to give a better match of the experimental data than the classic elastic-perfectly-plastic model.
Original languageEnglish
Pages (from-to)605-636
Number of pages32
JournalJournal of Sandwich Structures and Materials
Volume13 (5)
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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