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J. E. Luco

Bio: J. E. Luco is an academic researcher from University of Chile. The author has contributed to research in topics: Integral equation & Half-space. The author has an hindex of 1, co-authored 1 publications receiving 173 citations.

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Journal ArticleDOI
TL;DR: A review of the state-of-the-art of analyzing the dynamic response of foundations subjected to machine-type loadings can be found in this article, where the authors present simple formulae and dimensionless graphs for both the static and dynamic parts of impedances, pertaining to surface and embedded foundations having circular, strip, rectangular or arbitrary plan shape and supported by three types of idealized soil profiles: the halfspace, the stratum-over-bedrock and the layerover-halfspace.

512 citations

Journal ArticleDOI
TL;DR: In this article, a displacement-based, symmetric finite-element implementation of the perfectly matched layer (PML) model is presented for time-harmonic plane-strain or three-dimensional motion.

334 citations

Journal ArticleDOI
TL;DR: Soil-structure interaction is an interdisciplinary field of endeavor which lies at the intersection of soil and structural mechanics, soil-and structural dynamics, earthquake engineering, geophysics and geomechanics, material science, computational and numerical methods, and diverse other technical disciplines as discussed by the authors.

302 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented time-domain, displacement-based governing equations of the perfectly matched layer (PML) model for linear wave equations on an unbounded domain.
Abstract: One approach to the numerical solution of a wave equation on an unbounded domain uses a bounded domain surrounded by an absorbing boundary or layer that absorbs waves propagating outward from the bounded domain. A perfectly matched layer (PML) is an unphysical absorbing layer model for linear wave equations that absorbs, almost perfectly, outgoing waves of all non-tangential angles-of-incidence and of all non-zero frequencies. In a recent work [Computer Methods in Applied Mechanics and Engineering 2003; 192:1337-1375], the authors presented, inter alia, time-harmonic governing equations of PMLs for anti-plane and for plane-strain motion of (visco-)elastic media. This paper presents (a) corresponding time-domain, displacement-based governing equations of these PMLs and (b) displacement-based finite element implementations of these equations, suitable for direct transient analysis. The finite element implementation of the anti-plane PML is found to be symmetric, whereas that of the plane-strain PML is not. Numerical results are presented for the anti-plane motion of a semi-infinite layer on a rigid base, and for the classical soil-structure interaction problems of a rigid strip-footing on (i) a half-plane, (ii) a layer on a half-plane, and (iii) a layer on a rigid base. These results demonstrate the high accuracy achievable by PML models even with small bounded domains.

222 citations