Vol.22, No.2, 2022, pp. 169–174
UDC:

EFFECTS OF PRE-BUCKLING IN-PLANE DEFORMATION AND CURVATURE TERMS OF LAMINATED PLATES USING REFINED THEORY

Lairedj Abdelaziz1, Bessaih Bouziane2, Mouna Amara3, Abdelmalek Abdelmalek1, Mohammed Hadj Meliani3*, Hammadi Fodil1

1) Laboratory of Mechanical Modelling and Experimentation (L2ME), Faculty of Technology, Department of Mechanical Engineering, University Tahri Mohammed of Bechar, ALGERIA

2) Laboratory of Mechanical of Structures and Solids (LMSS) Faculty of Technology, Department of Mechanical Eng., University Djillali Liabes of Sidi Bel Abbes, ALGERIA

3) LPTPM, Hassiba Benbouali University of Chlef, Chlef, ALGERIA

email: dihovicni@visokatehnicka.edu.rs

 

Abstract

The paper presents the refined theory applied for buckling loads often encountered in composite plates, starting with inclusion of pre-buckling deformation and a curvature effect. The principle of minimum total potential energy is used to derive the governing equations associated with the present theory. The refined theory involves two unknown variables without using shear correction factor. A closed form solution is obtained using trigonometric functions suggested by solution technique, that satisfies all boundary conditions. The differential equations have been solved analytically and the numerical results describe critical buckling loads for the isotropic rectangular plates and orthotropic laminates, with both subjected to various combinations of tension and compression along plate edges. This is investigated to show the correctness of the theory proposed for buckling of the laminated plates. The critical buckling load obtained is performed on the basis of present theory. The effects of pre-buckling and curvatures terms on non-dimensional critical buckling loads are investigated and compared with previously published results.

Keywords: composite materials, refined theory, buckling plate, pre-buckling, curvature

full article (378 kB)