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J.M. Galán, R. Abascal, "Numerical Simulation of Lamb Wave Scattering in Semi-Finite Plates", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 325-340, 2000. doi:10.4203/ccp.65.13.1

Abstract

A Finite Element formulation to model the Lamb wave scattering in homogeneous and sandwich plates is presented. Dispersion curves are calculated by solving a quadratic eigenproblem. A meshing criterion to obtain accurate results with linear and quadratic elements is provided. An absorbing boundary condition for semi-infinite plates is derived from the formulation and used to study the Lamb wave reflection by simple obstacles. A hybrid Boundary Element-Finite Element formulation to solve Lamb wave diffraction by defects with more complex geometries is also presented. Both formulations are checked with a series of test problems and they are shown to provide excellent results.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 65 FINITE ELEMENTS: TECHNIQUES AND DEVELOPMENTS Edited by: B.H.V. Topping Paper XIII.1 Numerical Simulation of Lamb Wave Scattering in Semi-Finite Plates J.M. Galán and R. Abascal Grupo de Estructuras, Escuela Superior de Ingenieros, Seville, Spain doi:10.4203/ccp.65.13.1 purchase the full-text of this paper Full Bibliographic Reference for this paper J.M. Galán, R. Abascal, "Numerical Simulation of Lamb Wave Scattering in Semi-Finite Plates", in B.H.V. Topping, (Editor), "Finite Elements: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 325-340, 2000. doi:10.4203/ccp.65.13.1 Abstract A Finite Element formulation to model the Lamb wave scattering in homogeneous and sandwich plates is presented. Dispersion curves are calculated by solving a quadratic eigenproblem. A meshing criterion to obtain accurate results with linear and quadratic elements is provided. An absorbing boundary condition for semi-infinite plates is derived from the formulation and used to study the Lamb wave reflection by simple obstacles. A hybrid Boundary Element-Finite Element formulation to solve Lamb wave diffraction by defects with more complex geometries is also presented. Both formulations are checked with a series of test problems and they are shown to provide excellent results. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £80 +P&P)
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