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Simulation of Lamb wave interaction with defects in laminated plates by SEM
Author(s) -
Asmus Andreas,
Lammering Rolf
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210258
Subject(s) - diagonal , computation , gauss , finite element method , quadrature (astronomy) , mass matrix , matrix (chemical analysis) , gaussian quadrature , shear (geology) , structural engineering , mathematical analysis , mathematics , physics , materials science , geometry , composite material , engineering , algorithm , nyström method , integral equation , optics , quantum mechanics , neutrino , nuclear physics
For the simulation of the interaction of elastic waves in CFRP Plates with inhomogeneities and defects the spectral finite element method (SEM) is under investigation. The SEM uses high‐order shape functions which are composed of Lagrange polynomials with nodes at the Gauss‐Lobatto quadrature (GLq) points. In this way we obtain a diagonal mass matrix which makes an explicit time scheme more efficient. In a numerical example based on the first order shear deformation theory (FSDT) a computation by FEAP of an interaction with an inhomogeneity is presented. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)