Studying buckling and free vibration of laminated Bernoulli beam


Jawad Karam Zaboon


Southern Technical University, Iraq

Corresponding Author Email: Jawad.kareem@stu.edu.iq

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

In this paper, a simply-supported composite laminate beam has been studied for the purpose of analyzing the buckling and natural frequency. This beam was symmetric and made up of four layers with the following lamination [0 0]s, [90 90]s, [0 90]s and [90 90]s. Using Euler-Bernoulli beam theory and Navier-type solutions, the critical buckling load and the natural frequency of the laminated beam were determined. For the purpose of validating study, the results were compared with previous studies and were in great agreement with them. It is clear from the numerical results that the buckling load and the frequency increase with the increase in the volume fraction and decrease with an increase in the slender ratio a/h, as the lamination [0 0]s has maximum critical buckling load and natural frequency, while the lamination [90 90] has minimum.