Size: 14.4 MB | Format:PDF | Quality:Unspecified | Publisher: MARTYN S STOKER . JACK B PHEASANT ; Heiner josenhans | pages: 18
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Author: G. Schmidt, A. Tondl | Size: 5 MB | Format:PDF and Djvu | Quality:Scanner | Publisher: Cambridge University Press | Year: 2009 | pages: 421
This book expounds the theory of non-linear vibrations, a topic of great interest at present because of its many applications to important fields in physics and engineering. After introducing chapters giving the basic techniques for the study of non-linear systems the authors develop in detail the theory of selected topics encountered in their own work, presenting original material, approaches and results of analysis, and providing illustrations of useful applications.
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Advanced Vibrations: A Modern Approach is presented at a theoretical-practical level and explains mechanical vibrations concepts in detail, concentrating on their practical use. Related theorems and formal proofs are provided, as are real-life applications. Students, researchers and practicing engineers alike will appreciate the user-friendly presentation of a wealth of topics including but not limited to practical optimization for designing vibration isolators, and transient, harmonic and random excitations. This book also:
•Contains unique material based on statement-proof-examples
•Derives equations of motion using Newton-Euler and Lagrange methods
•Presents optimization of vibrating systems not normally covered in standard vibration books
Advanced Vibrations: A Modern Approach is an ideal book for designers, practitioner engineers, and students of engineering.
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*About FHWA:
The Federal Highway Administration (FHWA) is an agency within the U.S. Department of Transportation that supports State and local governments in the design, construction, and maintenance of the Nation’s highway system (Federal Aid Highway Program) and various federally and tribal owned lands (Federal Lands Highway Program). Through financial and technical assistance to State and local governments, the Federal Highway Administration is responsible for ensuring that America’s roads and highways continue to be among the safest and most technologically sound in the world.
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There is an increasing trend towards recording marine seismic data directly on the seafloor.
This acquisition strategy is mainly motivated by the possibility to simultaneously measure
the three components of particle motion in addition to the pressure in the water column
immediately above the seabed. Such four-component (4C) seismic recordings thus allow
for the recording of S-waves in marine environments and offer the prospect of decomposing
the wavefield into its up- and down-going P- and S-wave constituents.
The assumptions for acquisition and processing of 4C data is today based on the ocean
bottom model as a welded acoustic-elastic contact at the seabed with a homogeneous
acoustic layer overlying a homogeneous elastic half-space. This may not hold in wide
areas of the oceans where the seafloor typically consists of soft, water-saturated sediments
characterized by having strong to very strong seismic attenuation. Moreover, cyclically
changing sedimentation processes lead to layering in the sediments, thus introducing
macroscopic seismic anisotropy, and overburden pressure and associated compaction effects
are likely to result in a strong velocity gradients.
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MECHANICAL BEHAVIOUR OF SLENDER RC WALL UNDER SEISMIC LOADING STRENGTHENED WITH EXTERNAL BONDED CFRP
Author: S. Qazi Ph-D student Université Lyon 1-INSA LYON ;L. Michel Associate Professor Université Lyon 1-INSA LYON;E. Ferrier Professor Université Lyon 1-INSA LYON 1 | Size: 0.8 MB | Format:PDF | Quality:Unspecified
Recent earthquake surveys have highlighted significance of RC walls as an integral part of
structures. It was observed that RC wall structures sustained less damage in comparison to
structures that did not possessed RC wall. Researchers on the basis of their post earthquake
surveys concluded that RC wall buildings sustained damage because of flaws in design and
construction work. In this article experimental result of six RC shear walls is discussed. They
were designed under-reinforced to fail in flexure. Four out of these six specimens were
strengthened externally with CFRP strips bonded to wall panel and mesh anchors installed at
wall foundation joint. Two specimens, one RC and one CFRP retrofitted, were subjected to
static load test and four specimens, one RC and three CFRP retrofitted, were subjected to
cyclic load tests. The test result analysis discussion includes cracking pattern, stiffness,
ultimate load capacity, ductility, and energy dissipation.
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The building foundations that may be subjected to seismic force should be designed so as to
maintain structural safety equivalent to or exceeding that of the upper structure. It is important
to conduct an investigation according to the state of the site with respect to possible ground
deformation such as liquefaction and landslide, and measures such as appropriate soil
improvement should be taken as needed.
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Clarifies the vital interdependence between structural steel design and fabrication drawings, equipping students to work flexibly with both. This book offers an overview of structural design theory. It provides examples, illustrations, and real-world assignments.
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Short explanation about SSI with case study presented by Dr. C.G. Shashkin & Dr. M.B. Lisyuk from Saint Petersburg State Transport University - NPO “Georeconstruction”, St. Petersburg
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