Thermally induced instability on asymmetric buckling analysis of pinned-fixed FG-GPLRC arches

Zhicheng Yang, Airong Liu, Siu Kai Lai, Babak Safaei, Jiangen Lv, Yonghui Huang, Jiyang Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In the present work, an analytical study on the asymmetric static and dynamic buckling of a pinned-fixed functionally graded graphene nanoplatelet reinforced composite (FG-GPLRC) arch under thermal conditions is presented. The reinforcement of graphene nanoplatelets (GPLs) is dispersed along arch thickness by following a power law distribution. Making use of the modified Halpin–Tsai micromechanical model and energy method, the static buckling load of the arch under an arbitrary radial point load and the dynamic buckling load of the arch under an arbitrary radial step point load can be derived, which could be applied to determine the existence of dynamic buckling and the phenomenon of multiple limit points under a static state. A numerical analysis is conducted to verify the accuracy of the analytical method, a good prediction on the static and dynamic buckling of the pinned-fixed FG-GPLRC arch is demonstrated. In this study, the influence of GPLs weight fraction, concentration and geometry on the static and dynamic buckling of the arch is comprehensively discussed. The dynamic and static buckling loads of the arch are found to be sensitive to applied load position under various elevated temperatures. Arch buckling load decreases as the power law index increases, but it increases as temperature rises. It is also found that the present approach is able to trace the postbuckling paths of the arch for stability analysis. Besides, accurate first-known thermal buckling solutions are also presented.

Original languageEnglish
Article number113243
JournalEngineering Structures
Volume250
DOIs
Publication statusPublished - 1 Jan 2022

Keywords

  • Asymmetric buckling
  • Load position
  • Nonlinear equilibrium
  • Pinned-fixed FG-GPLRC arch
  • Thermal effect

ASJC Scopus subject areas

  • Civil and Structural Engineering

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