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3 produkter
3 produkter
Del 5 - Lecture Notes in Civil Engineering
Experimental Vibration Analysis for Civil Structures
Testing, Sensing, Monitoring, and Control
Inbunden, Engelska, 2017
3 172 kr
Skickas inom 10-15 vardagar
This edited volume presents selected contributions from the International Conference on Experimental Vibration Analysis of Civil Engineering Structures held in San Diego, California in 2017 (EVACES2017). The event brought together engineers, scientists, researchers, and practitioners, providing a forum for discussing and disseminating the latest developments and achievements in all major aspects of dynamic testing for civil engineering structures, including instrumentation, sources of excitation, data analysis, system identification, monitoring and condition assessment, in-situ and laboratory experiments, codes and standards, and vibration mitigation.
Del 5 - Lecture Notes in Civil Engineering
Experimental Vibration Analysis for Civil Structures
Testing, Sensing, Monitoring, and Control
Häftad, Engelska, 2018
3 172 kr
Skickas inom 10-15 vardagar
This edited volume presents selected contributions from the International Conference on Experimental Vibration Analysis of Civil Engineering Structures held in San Diego, California in 2017 (EVACES2017).
Del 232 - Institut für Baustatik und Konstruktion
Absorbing Boundaries for the Time-Domain Analysis of Dam-Reservoir-Foundation Systems
Häftad, Engelska, 2000
534 kr
Skickas inom 10-15 vardagar
This report deals with the modeling and analysis of the earthquake behavior of concrete gravity dams. This task becomes very challenging when the interaction with the reservoir and foundation has to be considered. In addition, a concrete gravity dam may get severely damaged by dynami cally propagating cracks when subjected to a severe earthquake ground motion. This strongly nonlinear behavior of dams impedes the application of state-of-the-art frequency-domain meth ods for the analysis because the Superposition principle is no longer valid. As a consequence, the model has to be formulated in the time domain complicating the analysis even more. In this report, which is based on a doctoral thesis, a new method is presented that permits to develop absorbing boundary conditions for the nonlinear time-domain analysis of concrete grav ity dams. These conditions are based on a approximation of dynamic stiffness matrices using series of orthogonal functions and advanced model reduction techniques of linear systems theory. The new absorbing boundary conditions are very accurate so that they are virtually equivalent to dynarnic stiffness matrices obtained by a rigorous solution of a far field. This allows to reduce the size of near fields dramatically and permits an accurate and numerically efficient nonlinear time domain analysis.