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dc.contributorUniversity of Texas at Austin. Department of Civil Engineering.-
dc.contributorUnited States. Assistant Secretary of the Army (R & D)-
dc.contributor.authorSykora, David W.-
dc.contributor.authorRoesset, Jose M.-
dc.descriptionTechnical Report-
dc.descriptionAbstract: This repon summarizes an analysis for estimating the variation of displacements in space and time produced by dynamic loads in complex isotropic media using a numerical approximation method. The important distinction is that the formulation allows cenain three-dimensional (3-D) problems to be solved using a two-dimensional (2-D) numerical model. To implement this method, the stratigraphy and material properties cannot vary in a horizontal direction (2-D stratigraphy). However, the distribution and extent of loads may vary in both horizontal directions (3-D load) providing for the analysis of synthetic sources. These types of problems cannot be solved analytically but normally would be solved using a laborious 3-D numerical approximation. The procedure involves condensing the 3-D dynamic stiffness mattices into equivalent 2-D matrices and representing the load function in the out-of-plane direction with a Fourier expansion. This report summarizes previous studies of wave propagation, the proposed formulation and computer implementation of a new finite element computer code, and the validation and parametric analysis of this code.-
dc.publisherGeotechnical Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical report (U.S. Army Engineer Waterways Experiment Station) ; GL-92-16.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectComputer software-
dc.subjectComputer programs-
dc.subjectDynamic displacements-
dc.subjectFinite element method-
dc.subjectFourier analysis-
dc.subjectSoil dynamics-
dc.subjectSoil mechanics-
dc.subjectDynamic testing-
dc.titleTwo-dimensional planar geosystems subjected to three-dimensional dynamic loads-
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