Vibration analysis of stiffened plates using finite element method

Abstract

This paper presents the vibration analysis of stiffened plates, using both conventional and super finite element methods. Mindlin plate and Timoshenko beam theories are utilized so as to formulate the plate and stiffeners, respectively. Eccentricity of the stiffeners is considered and they are not limited to be placed on nodal lines. Therefore, any configuration of plate and stiffeners can be modeled. Numerical examples are proposed to study the accuracy and convergence characteristics of the super elements. Effects of various parameters such as the boundary conditions of the plate, along with orientation, eccentricity, dimensions and number of the stiffeners on free vibration characteristics of stiffened panels are studied.

Forced vibration analysis of arbitrarily constrained rectangular plates and stiffened panels using the assumed mode method

“…Also, Patel et al [20] studied the effect of boundary conditions and stiffeners on the natural response of thin rectangular plates using FEM. Hamedani et al [21] performed vibration analysis of stiffened panels using both conventional and super finite element method, and provided comparison with experimental results.…”

Effects of Partial Edge Loading and Fibre Configuration on Vibration and Buckling Characteristics of Stiffened Composite Plates

“…Srivastava et al (2003) examined the critical buckling behaviour of isotropic stiffened plates with partial and contrated loads using FE approach. The free vibration characteristics of isotropic stiffened plates are studied by Hamedani et al (2012) using super finite element technique. The same problem and techniques were further extended to get buckling results by Hamedani and Ranji (2013).…”

Free vibration analysis of isotropic plate with stiffeners using finite element method

“…Some natural frequencies and modes of two such panels, each with different boundary conditions, are then determined. The vibration analysis of stiffened plates and the effects of various parameters such as the boundary conditions of the plate, along with orientation, eccentricity, dimensions and number of the stiffeners on free vibration characteristics of stiffened panels have been studied by Hamedani et al (2012). Samanta and Mukhopadhyay (2004) studied the development of a new stiffened shell element and subsequent application of this element in determining natural frequencies and mode shapes of the different stiffened structures.…”