Effect of Delamination on the Nonlinear Behavior of Composite Laminated Beams

[+] Author and Article Information
I. Sheinman, M. Soffer

Faculty of Civil Engineering, Technion - Israel Institute of Technology, Haifa, Israel

J. Eng. Mater. Technol 112(4), 393-397 (Oct 01, 1990) (5 pages) doi:10.1115/1.2903348 History: Received November 09, 1989; Online April 29, 2008


This paper presents a parametric study of the effect of delamination, and of initial imperfection, on the overall nonlinear behavior of laminated composite beams. The study is based on geometrical nonlinear analysis with the Von-Karman kinematic approach. It is shown that the bifurcation point provides not more than an indication of the buckling behavior, and that the full nonlinear analysis is needed for predicting the load-carrying capacity. It was also found that the delaminated beam is sensitive to initial imperfection.

Copyright © 1990 by The American Society of Mechanical Engineers
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