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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Vibration analysis of visco-elastically coupled beams
 Hračov, Stanislav ; Náprstek, Jiří
The paper presents a detail analysis of the forced vibration. The dynamic behaviour of the system is investigated parametrically to cover all possible effects of individual subsystems. Damping effectiveness is also analysed for several values of viscosity of the interlayer and damping of the particular beams. The recommendations and limitations for the application of the system are presented and discussed.
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Investigation of aeroelastic bridge instabilities using the multidimensional Fokker-Planck equation and wind-tunnel experiment
 Král, Radomil
Stability of bridges and other line-like engineering structures is an important part of their overall design. It is also still of great interest nowadays due to a higher demand on increasing the span while maintaining an economical cost and service. During the previous decades sophisticated methods for the aeroelastic instability prediction have evolved and successfully applied to the real structures and many questions have been adequately answered.
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Some results of simulations of flows with internal permeable walls
 Louda, Petr
The work deals with the numerical modelling of compressible flow in a domain containing permeable walls in its interior, i.e. submerged in the fluid. The aim is to exclude direct simulation and find a model approximating the flow through a permeable plate driven by the static pressure difference between the sides of the wall. The numerical experiments so far enable to understand better forming of parasitic wave structures in the measuring section of the wind tunnel. The model of permeable wall needs further verification.
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