Effect of material nonlinearity on buckling and postbuckling of fiber composite laminates

S. S. Wang, S. Srinivasan, H. T. Hu, Rami HajAli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

An analytical study is presented in this paper on the effect of material nonlinearity on buckling and postbuckling responses of fiber composite laminate plates and shells subjected to general mechanical loading. The material nonlinearity of the composite is modeled by power-law type, shear nonlinear constitutive equations. The nonlinear effective composite constitutive equations in an incremental form are incorporated into a geometrically nonlinear analysis for studying the composite buckling and postbuckling deformations. A modified Riks solution scheme along with an updated Lagrangian formulation is used to construct the equilibrium path during the composite postbuckling. Several numerical examples are given to illustrate the effect of material nonlinearity on critical loads and postbuckling deformations of the composite plates and shells under axial and pressure loading. Influences of lamination parameters and geometric imperfection on the postbuckling equilibrium path and strength of the composite structures with nonlinear shear properties are also shown and discussed.

Original languageEnglish
Title of host publicationMechanics of Composite Materials - Nonlinear Effects
EditorsM.W. Hyer
PublisherPubl by ASME
Pages81-95
Number of pages15
ISBN (Print)0791811387
Publication statusPublished - 1993 Jan 1
Event1st Joint Mechanics Meeting of ASME/ASCE/SES - MEET'N'93 - Charlottesville, VA, USA
Duration: 1993 Jun 61993 Jun 9

Publication series

NameAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume159
ISSN (Print)0160-8835

Other

Other1st Joint Mechanics Meeting of ASME/ASCE/SES - MEET'N'93
CityCharlottesville, VA, USA
Period93-06-0693-06-09

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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