Journal ArticleDOI
Stiffness matrices for layered soils
Eduardo Kausel,J M Roesset +1 more
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In this article, the Haskell-Thompson transfer matrix method is used to derive layer stiffness matrices which may be interpreted and applied in the same way as stiffness matrix in conventional structural analysis, and the exact expressions are given for the matrices, as well as approximations for thin layers.Abstract:
The Haskell-Thompson transfer matrix method is used to derive layer stiffness matrices which may be interpreted and applied in the same way as stiffness matrices in conventional structural analysis These layer stiffness matrices have several advantages over the more usual transfer matrices: (1) they are symmetric; (2) fewer operations are required for analysis; (3) there is an easier treatment of multiple loadings; (4) substructuring techniques are readily applicable; and (5) asymptotic expressions follow naturally from the expressions (very thick layers; high frequencies, etc) While the technique presented is not more powerful than the original Haskell-Thompson scheme, it is nevertheless an elegant complement to it The exact expressions are given for the matrices, as well as approximations for thin layers Also, simple examples of application are presented to illustrate the use of the methodread more
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Book ChapterDOI
Ground-Borne Vibration due to Railway Traffic: A Review of Excitation Mechanisms, Prediction Methods and Mitigation Measures
TL;DR: A comprehensive overview of the state of the art on railway-induced ground vibration is provided in this paper, with focus on low frequency feelable vibration and the case of railway traffic at grade.
BookDOI
Recent advances in earthquake geotechnical engineering and microzonation
TL;DR: The influence of scale on microzonation and impact studies is discussed in this article, where the authors present a case study of earthquake resistant design of shallow foundations and the behavior and design of deep foundations subject to earthquakes.
Journal ArticleDOI
Modelling, simulation and evaluation of ground vibration caused by rail vehicles
TL;DR: In this paper, the authors discuss the need to develop rail networks over long distances and within cities as more sustainable transport options, however, noise and vibration are seen as a negative environmental consequ...
Journal ArticleDOI
Numerical analysis of ultrasonic transmission and absorption of oblique plane waves through the human skull
Mark A. Hayner,Kullervo Hynynen +1 more
TL;DR: Ultrasonic transmission and absorption of oblique plane waves through the human skull are analyzed numerically for frequencies ranging from 1/2 to 1 MHz for noninvasive ultrasound therapy of brain disorders where numerical predictions of skull transmission are used to set the phase and amplitude of source elements in the phased array focusing system.
Journal ArticleDOI
Experimental validation of a numerical prediction model for free field traffic induced vibrations by in situ experiments
Geert Lombaert,Geert Degrande +1 more
TL;DR: In this paper, a 2D vehicle model is used for the calculation of the axle loads from the longitudinal road profile and free field soil response is calculated with the dynamic Betti-Rayleigh reciprocity theorem, using a transfer function between the road and the receiver that accounts for dynamic road-soil interaction.
References
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Book ChapterDOI
The Dispersion of Surface Waves on Multilayered Media
TL;DR: In this paper, a matrix formalism developed by W. T. Thomson is used to obtain the phase velocity dispersion equations for elastic surface waves of Rayleigh and Love type on multilayered solid media.
Journal ArticleDOI
Transmission of Elastic Waves through a Stratified Solid Medium
TL;DR: In this article, the transmission of a plane elastic wave at oblique incidence through a stratified solid medium consisting of any number of parallel plates of different material and thickness is studied theoretically.
Journal ArticleDOI
Shear Waves in Plane Infinite Structures
John Lysmer,Gunter Waas +1 more
TL;DR: In this paper, a numerical procedure is developed for the dynamic analysis of plane, linearly elastic systems consisting of an irregular zone joined to semi-infinite layered zones, where all exciting forces are assumed to be harmonic and perpendicular to the plane of the structure.
Journal ArticleDOI
Lumped mass method for Rayleigh waves
TL;DR: In this paper, a simple numerical method is developed for the analysis of generalized Rayleigh waves in multilayered elastic media, which completely avoids the use of displacement potentials and leads to a simple eigenvalue problem which may be solved by generally available effective computer codes.