Modeling, Evaluation, and Asymptotic Analysis of Attenuation Anisotropy
Author: Bharath Chandra Shekar
Publisher:
Published: 2014
Total Pages: 99
ISBN-13:
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Author: Bharath Chandra Shekar
Publisher:
Published: 2014
Total Pages: 99
ISBN-13:
DOWNLOAD EBOOKAuthor: Lenser A Aghalovyan
Publisher: World Scientific
Published: 2015-03-03
Total Pages: 377
ISBN-13: 9814579041
DOWNLOAD EBOOKA consistent theory for thin anisotropic layered structures is developed starting from asymptotic analysis of 3D equations in linear elasticity. The consideration is not restricted to the traditional boundary conditions along the faces of the structure expressed in terms of stresses, originating a new type of boundary value problems, which is not governed by the classical Kirchhoff-Love assumptions. More general boundary value problems, in particular related to elastic foundations are also studied.The general asymptotic approach is illustrated by a number of particular problems for elastic and thermoelastic beams and plates. For the latter, the validity of derived approximate theories is investigated by comparison with associated exact solution. The author also develops an asymptotic approach to dynamic analysis of layered media composed of thin layers motivated by modeling of engineering structures under seismic excitation.
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Publisher:
Published: 1995
Total Pages: 702
ISBN-13:
DOWNLOAD EBOOKAuthor: Raouf A. Ibrahim
Publisher: John Wiley & Sons
Published: 2017-03-29
Total Pages: 1016
ISBN-13: 1119135494
DOWNLOAD EBOOKThis important, self-contained reference deals with structural life assessment (SLA) and structural health monitoring (SHM) in a combined form. SLA periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, and reliability theory. For common structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. On the other hand, SHM deals with the detection, prediction, and location of crack development online. Both SLA and SHM are combined in a unified and coherent treatment.
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Publisher:
Published: 1974-07
Total Pages: 978
ISBN-13:
DOWNLOAD EBOOKAuthor: Cezar I. Trifu
Publisher: Springer Science & Business Media
Published: 2002-03-01
Total Pages: 632
ISBN-13: 9783764366537
DOWNLOAD EBOOKVol. t59. 2002 J damaged zone on the rock mass. Collins el al. examine the benefits of employing small-scale microseismic and acoustic emission systems to investigate the temporal fracture mechanics of microcrack formation associated with a tunnel sealing experiment at the Underground Research Laboratory nuclear waste test site in Canada. They associate microseismic events with clusters of acoustic emissions and outline that both types of sources are generally characterized by deviatoric failure components. Using the same experimental setup, Hazzard el al. employed a bonded particle model to simulate shear microfraclures induced by the lunnel excavation. Comparing Ihe modeling results with information provided by the moniloring of microseismicity and acoustic emissions, the authors identify similarities in both the presence of foreshocks associated with macro-slip events, and the pallerns of energy release during loading. Hildyard and Young allempt to model the seismic wave interaction with fractured rock surrounding underground openings, through exper iments such as a rockbursl simulation, in situ events generating acoustic emissions, and laboratory fractures. Their results highlight that realistic wave modeling around openings requires the presence of a stress-dependent fracture stiffness coupling the surfaces of the fracture. Ultrasonic attenuation tomography and enhanced velocity tomography were studied by D~bski and Young for an earlier laboratory experiment of thennally induced fractures in granite.
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Published: 1984
Total Pages: 784
ISBN-13:
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Published: 1980
Total Pages: 692
ISBN-13:
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Published: 1979
Total Pages: 126
ISBN-13:
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