Influence of elastic properties dependence of the stress state on buckling conditions in composite structures

Alexey N. Fedorenko, Boris N. Fedulov, Evgeny V. Lomakin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper demonstrates, as an illustration of the influence of stress state susceptibility of material properties on the behavior of composite structures, the solution of problem of buckling and postbuckling analysis of stiffened thin-walled composite cylinder, where straightforward approach with linear elastic theory leads to inaccurate results even on initial stage of loading. During buckling process, a stress state in material point is able to change significantly and it should be taken into account, for example, for materials with different elastic moduli in tension and compression and for other stress state types, too. Nonlinear elastic model based on the use of triaxiality parameter is considered and implemented in FEA software to capture effects related with sensitivity of material elastic properties to the stress state.

Original languageEnglish
Title of host publicationECCM 2018 - 18th European Conference on Composite Materials
PublisherApplied Mechanics Laboratory
ISBN (Electronic)9781510896932
Publication statusPublished - 2020
Externally publishedYes
Event18th European Conference on Composite Materials, ECCM 2018 - Athens, Greece
Duration: 24 Jun 201828 Jun 2018

Publication series

NameECCM 2018 - 18th European Conference on Composite Materials

Conference

Conference18th European Conference on Composite Materials, ECCM 2018
Country/TerritoryGreece
CityAthens
Period24/06/1828/06/18

Keywords

  • Buckling
  • Composite laminate
  • Nonlinear elasticity
  • Thin-walled structure

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