Stress field in postbuckled composite stiffeners loaded in compression

Nobuhide Uda, Levend Parnas, Erian A. Armanios

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

Abstract

The stress field in a postbuckled I-section composite stiffener under compression is presented. The flange and web elements are symmetric orthotropic laminates and the loaded ends are simply supported. The analysis is based upon a higher-order shear deformation theory. By assuming trigonometric functions in the loading direction for the displacement field, the nonlinear large deflection equations are converted into simultaneous first-order nonlinear ordinary differential equations. These equations can be solved numerically for any boundary condition along the unloaded edges using a two-point boundary value problem solver. Results show that peel stress initiates at the free-edge of the flange. The locations of the maximum peel stress coincide with the failure sites observed in previous experiments.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Advanced Composite Materials
EditorsT. Chandra, A.K. Dhingra
PublisherPubl by Minerals, Metals & Materials Soc (TMS)
Pages315-321
Number of pages7
ISBN (Print)0873392515
Publication statusPublished - Dec 1 1993
EventProceedings of the International Conference on Advanced Composite Materials - Wollongong, Aust
Duration: Feb 15 1993Feb 19 1993

Publication series

NameProceedings of the International Conference on Advanced Composite Materials

Other

OtherProceedings of the International Conference on Advanced Composite Materials
CityWollongong, Aust
Period2/15/932/19/93

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Uda, N., Parnas, L., & Armanios, E. A. (1993). Stress field in postbuckled composite stiffeners loaded in compression. In T. Chandra, & A. K. Dhingra (Eds.), Proceedings of the International Conference on Advanced Composite Materials (pp. 315-321). (Proceedings of the International Conference on Advanced Composite Materials). Publ by Minerals, Metals & Materials Soc (TMS).