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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.02 seconds. 
Comparison of flutter derivatives for Kao Pin Hsi Bridge and flat plate
 Buljac, A. ; Pospíšil, Stanislav ; Kozmar, H. ; Kuznetsov, Sergeii ; Král, Radomil
Focus of this work is put on evaluation of dimensionless aeroelastic coefficients, i.e. flutter derivatives, which are considered to be indicators of the aeroelastic stability of bridges. A comprehensive experimental study on dynamic wind-induced behavior of the Kao-Pin-Hsi bridge in Taiwan is described. The results are compared to those of the thin flat plate with high width to height ratio, which previously proved to be aeroelastically stable.
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Solution of the multi-dimensional Fokker-Planck by means of finite element method
 Náprstek, Jiří ; Král, Radomil
As a demonstrative example, the two-degree-of-freedom system is investigated. A combination of Rayleigh\nor Van der Pol with Duffing types of differential equations are assumed characterized by the\nnonlinear behavior both in the stiffness and damping. This system is subjected to the additive and\nthe multiplicative Gaussian white noise which represents a part of non-linear aero-elastic effects in\nthe system.
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Dynamics of beam pair coupled by visco-elastic interlayer
 Náprstek, Jiří ; Hračov, Stanislav
Two parallel slender beams with visco-elastic interlayer can serve as a relevant mathematical model of a number of engineering systems. A typical example is a double skin facade of tall buildings. The outer skin can be considered as a dynamic damper and thus contribute to comfort inside the building. Many applications emerge in power piping when using two coaxial pipes with an interlayer in order to suppress vibration due to flow and structure interaction. Similar inconvenient behavior can exhibit panels which fall into the flutter post-critical state. Further applications can be expected at industrial chimneys, towers, etc. In principle the idea of vibration damping using such a formation is inspired by very well known tuned mass damper. However its internal structure, function, limitations and singular states are incomparably more complicated and therefore adequate applications should be cautious.
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