Structural Engineering and Mechanics

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Analysis of laminated composite plates based on different shear deformation plate theories

  • Tanzadeh, Hojat (Department of Civil and Transportation Engineering, University of Isfahan) ;
  • Amoushahi, Hossein (Department of Civil and Transportation Engineering, University of Isfahan)
  • Received : 2019.01.21
  • Accepted : 2020.02.21
  • Published : 2020.07.25
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Abstract

A finite strip formulation was developed for buckling and free vibration analysis of laminated composite plates based on different shear deformation plate theories. The different shear deformation theories such as Zigzag higher order, Refined Plate Theory (RPT) and other higher order plate theories by variation of transverse shear strains through plate thickness in the parabolic form, sine and exponential were adopted here. The two loaded opposite edges of the plate were assumed to be simply supported and remaining edges were assumed to have arbitrary boundary conditions. The polynomial shape functions are applied to assess the in-plane and out-of-plane deflection and rotation of the normal cross-section of plates in the transverse direction. The finite strip procedure based on the virtual work principle was applied to derive the stiffness, geometric and mass matrices. Numerical results were obtained based on various shear deformation plate theories to verify the proposed formulation. The effects of length to thickness ratios, modulus ratios, boundary conditions, the number of layers and fiber orientation of cross-ply and angle-ply laminates were determined. The additional results on the same effects in the interaction of biaxial in-plane loadings on the critical buckling load were determined as well.

Keywords

References

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