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

Giuseppe Pitarresi, Joao Pedro Guimaraes Amorim

Risultato della ricerca: Article

7 Citazioni (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.
Lingua originaleEnglish
pagine (da-a)605-636
Numero di pagine32
RivistaJournal of Sandwich Structures and Materials
Volume13 (5)
Stato di pubblicazionePublished - 2011

Fingerprint

Indentation
Foams
Plastics
Compaction

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

Cita questo

@article{057f27e5cccc41fd92bafbbd3f03bd23,
title = "Indentation of rigidly supported sandwich beams with foam cores exhibiting non-linear compressive behaviour.",
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.",
keywords = "Winkler foundation, foam cores, indentation, sandwich composites",
author = "Giuseppe Pitarresi and {Guimaraes Amorim}, {Joao Pedro}",
year = "2011",
language = "English",
volume = "13 (5)",
pages = "605--636",
journal = "Journal of Sandwich Structures and Materials",
issn = "1099-6362",
publisher = "SAGE Publications Ltd",

}

TY - JOUR

T1 - Indentation of rigidly supported sandwich beams with foam cores exhibiting non-linear compressive behaviour.

AU - Pitarresi, Giuseppe

AU - Guimaraes Amorim, Joao Pedro

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Winkler foundation

KW - foam cores

KW - indentation

KW - sandwich composites

UR - http://hdl.handle.net/10447/61806

M3 - Article

VL - 13 (5)

SP - 605

EP - 636

JO - Journal of Sandwich Structures and Materials

JF - Journal of Sandwich Structures and Materials

SN - 1099-6362

ER -