Author(s)

S. R. Mohebpour, P. Malekzadeh & K. Hooman

Abstract

In this paper the dynamic response of the asymmetric orthotropic composite laminated beam subjected to moving masses has been studied. Through a onedimensional finite element having 24 degrees of freedom the effects of extension, bending, and transverse shear deformation are studied without losing the Poisson's effect. In order to preserve the characteristic coupling including bend-stretch, and bend-twist coupling the lateral strains and curvatures are presented on the basis of axial and transverse strains and curvatures. The dynamic responses of symmetric isotropic laminated beams under the action of moving masses have been compared to the experimental results. This study uses the higher order shear deformation theory that can be employed in the study of force and free vibration problems. Keywords: moving masses, dynamic response, composite laminated beam, higher order shear deformation, rotary inertia. 1 Introduction A lot of papers can be found on the theoretical [1-3], experimental [4-6], and numerical [7-13] analysis of traditional beams and plates under the action of moving masses, but on the study of the composite laminated beams under the action of moving masses few researchers have worked [14]. In this article to study the dynamic response of an orthotropic composite laminated beam under the actions of moving masses, a solution based on a finite element method has been developed. The algorithm also accounts for the shear deformation, the rotary and higher-order inertia effects, A conforming beam element based on Hermitian interpolation function that satisfies C1 continuity

Keywords

moving masses, dynamic response, composite laminated beam,higher order shear deformation, rotary inertia.