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soil strcutrue interaction -real behavior of structures
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Aircraft Structures for Engineering Students by T H G Megson
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Earthquake response of concrete gravity dams including hydrodynamic and foundation interaction effects
Earthquake response of concrete gravity dams including hydrodynamic and foundation interaction effects
Chopra, Anil K.; Chakrabarti, Parthasarathi; Gupta, Sunil
UCB/EERC-80/01, Earthquake Engineering Research Center, University of California, Berkeley, 1980-01, 210 pages (540/C49/1980)
A general procedure is presented for the analysis of the response of concrete gravity dams, including the dynamic effects of impounded water and flexible foundation rock, to the transverse (horizontal) and vertical components of earthquake ground motion. The problem is reduced to one in two dimensions, considering the transverse vibration of a monolith of the dam. The system is analyzed under the assumption of linear behavior for the concrete, foundation rock, and water. The complete system is considered to comprise three substructures--the dam, represented as a finite element system; the fluid domain, as a continuum of infinite length in the upstream direction; and the foundation rock region, as a viscoelastic halfplane. The structural displacements of the dam are expressed as a linear combination of Ritz vectors, chosen as normal modes of an associated undamped dam-foundation system. The modal displacements due to earthquake motion are computed by synthesizing their complex frequency responses using fast Fourier transform procedures. The stress responses are calculated from the modal displacements. The response of idealized dam cross sections to harmonic horizontal or vertical ground motion is presented for a range of important system parameters characterizing the properties of the dam, foundation rock, and impounded water. Based on these results, the authors investigate and present conclusions concerning the separate effects of fluid-structure and foundation-structure interaction, and the combined effects of the two sources of interaction on the dynamic response of dams.
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Programing Finite Element Method with Matlab-Section1 'TRUSS2D'
The goal of this document is to give a very brief overview and direction in the writing of fnite element code using Matlab
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Strength of Materials provides a comprehensive overview of the latest theory of strength of materials. The unified theory presented in this book is developed around three concepts: Hooke's Law, Equilibrium Equations, and Compatibility conditions. The first two of these methods have been fully understood, but clearly are indirect methods with limitations. Through research, the authors have come to understand compatibility conditions, which, until now, had remained in an immature state of development. This method, the Integrated Force Method (IFM) couples equilibrium and compatibility conditions to determine forces directly.
The combination of these methods allows engineering students from a variety of disciplines to comprehend and compare the attributes of each. The concept that IFM strength of materials theory is problem independent, and can be easily generalized for solving difficult problems in linear, nonlinear, and dynamic regimes is focused upon. Discussion of the theory is limited to simple linear analysis problems suitable for an undergraduate course in strength of materials. To support the teaching application of the book there are problems and an instructor's manual.
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Author: James E. Brumbaugh, Rex Miller | Size: 4 MB | Format:PDF | Quality:Original preprint | Publisher: Audel | Year: January 23, 2007 | pages: 444 | ISBN: 978-0764588099
Featuring updated charts dealing with the most common situations welding workers face on the job , this comprehensive, pocket-sized reference is based on recommendations from working professionals and covers welding symbols and definitions, types of joints and welds, typical welding station configurations, oxygen cylinders, arc-welding charts, U.S metric measures, and more.
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