Vibration Analysis of Cross-Ply Plates Under Initial Stress Using Refined Theory

  • Ibtehal Abbas Sadiq Department of Mechanical Engineering / University of Baghdad
  • Kani Hussein Bawa Department of Mechanical Engineering / University of Baghdad
Keywords: Composite laminated plate, buckling analysis, free vibration analysis, Refined plate theory.

Abstract

Natural frequency under initial stresses for simply supported cross-ply composite laminated plates (E glass- fiber) are obtained using Refind theory (RPT). This theory accounts for parabolic distribution of the transverse shear strain through the plate thickness and satisfies the zero traction boundary conditions on the surfaces of the plate without using shear correction factors. The governing equations for Eigen value problem under initial stress are derived using Hamilton’s principle and solved using Navier solution for simply supported cross-ply symmetric and antisymmetric laminated plates. The effect of many design factors such as modulus ratio, thickness ratio and number of laminates on the Natural frequency and buckling stresses of orthotropic plates are studied. The results are compared with other researcher.

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Published
2018-12-01
How to Cite
Sadiq, I., & Bawa, K. (2018). Vibration Analysis of Cross-Ply Plates Under Initial Stress Using Refined Theory. Al-Khwarizmi Engineering Journal, 14(4), 34-44. https://doi.org/10.22153/kej.2018.05.002