Wave propagation analysis in anisotropic and inhomogeneous uncracked and cracked structures using pseudospectral finite element method

Sridhar, R. ; Chakraborty, A. ; Gopalakrishnan, S. (2006) Wave propagation analysis in anisotropic and inhomogeneous uncracked and cracked structures using pseudospectral finite element method International Journal of Solids and Structures, 43 (16). pp. 4997-5031. ISSN 0020-7683

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.ijsolstr.2005.10.005

Abstract

The work deals with the development of an effective numerical tool in the form of pseudospectral method for wave propagation analysis in anisotropic and inhomogeneous structures. Chebyshev polynomials are used as basis functions and Chebyshev–Gauss–Lobatto points are used as grid points. The formulation is implemented in the same way as conventional finite element method. The element is tested successfully on a variety of problems involving isotropic, orthotropic and functionally graded material (FGM) structures. The formulation is validated by performing static, free vibration and wave propagation analysis. The accuracy of the element in predicting stresses is compared with conventional finite elements. Free vibration analysis is carried out on composite and FGM beams and the computational resources saved in each case are presented. Wave propagation analysis is carried out using the element on anisotropic and inhomogeneous beams and layer structures. Wave propagation in thin double bounded media over long propagating distances is studied. Finally, a study on scattering of waves due to embedded horizontal and vertical cracks is carried out, where the effectiveness of modulated pulse in detecting small cracks in composites and FGMs has been demonstrated.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Chebyshev Polynomial; FGM; Composite; High Frequency; Structural Health Monitoring; Wave Scattering
ID Code:99026
Deposited On:30 Jul 2015 11:48
Last Modified:30 Jul 2015 11:48

Repository Staff Only: item control page