Abstract
This paper presents static analysis of laminated composite stiffened plates using isogeometric finite element analysis (IGA) based on a higher order shear deformation theory (HSDT). The present IGA approach uses non-uniform rational B-splines (NURBS) basis function for geometric representation of the object and for the discretization of the field variables. One of the great advantages of this method is that the results converge with less number of elements than the conventional finite element method (FEM). IGA is used to capture geometry exactly and make the refinement more flexible without further communicating with the computer-aided design (CAD). With this, IGA enables us to achieve the smoothness easily of any arbitrary order. Numerical examples are presented to show the high accuracy and correctness of the present method after some validation with the existing literature. The formulation developed is incorporated into a computer program developed in-house. Detailed parametric study is done by changing different parameters of the stiffened plate.
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