1.
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The contribution presents experimental investigation of the frequency modal, damping and stress wave propagation characteristics and finite element (FE) mode ling of the [...]
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2.
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Dupal, J.
The paper deals with a new approach to critical speed determination of rotors by means of the simple method against the so far used iterative method and a method utilizin [...]
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The paper gives an introduction in the theory of laminar flow instability solution using the Orr-Sommerfeld equation. There are summarized assumptions for derivation of [...]
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The paper is focused on analysis of changes of eigenfrequencies due to local damage in beam buckling problem. The aim is determination of suitable initial parameters for [...]
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The presented poster deals with the Finite Element Analysis dynamical model of VVER 1000 nuclear reactor control rod drive (LKP-M/3). It describes the setting up of the c [...]
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10.
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The tilting pad bearings are very often applied in high speed rotating machines. The exact solution of bearing characteristics, including the motion of tilting pads, is v [...]
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11.
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Rozehnal, D.
This paper describes nonstacionary measurement of the airfoil aerodynamic characteristics at low speed wind tunnel on the University of Defence Brno. First part introduce [...]
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12.
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The paper deals with mathematical modelling of vibration and modal analysis of an individual wheelset drive with a hollow graduated shaft. The method is based on the syst [...]
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The paper deals with mathematical modelling of vibration and modal analysis of a four-axle locomotive with two bogie. Each bogie has two individual wheelset drives. The m [...]
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The paper deals with the modelling of balancing machine vibration and the identification of the stiffness and damping coefficients of oil-film bearings. The real balancin [...]
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Instable behaviour both of the road and tram bridge at the Prague “Chotkova road” up to Klárov and the rock mass around has been monitored long time yet. The movemen [...]
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16.
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Pečínka, L.
Analysis of the dynamic response of the beam under moving load and axial periodic force and with constant damping result in well known solution of Mathieu equation. In fa [...]
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Moving load is such a load, which vary both in time and space. As the result the stress state of piping increase and frequency spectrum decrease. If the flow velocity is [...]
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The paper assess a behavior and an impact of the air flow on two hangar buildings. For the first hangar the investigation was carried out using both wind tunnel testing [...]
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The paper deals with the optimization of parameters (mass parameters of stiff bodies) of the dynamic model of the reactor WWER 1000 support cylinder. Within the model of [...]
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20.
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Naď, M.
The existence of a crack in a structural member introduces local modification of flexibility and consequently affects the dynamic behaviour of the cracked member. In this [...]
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21.
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Slender structures exposed to wind influences are subjected to a random component of the pressure generated by a fluctuation part of the wind velocity. The structure it [...]
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The principle of a steam turbine balanced control system is presented here. The dynamic stress measurement method in parts of valves on its models in the aerodynamic wind [...]
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Abstrakt: The impact motion of rigid rotor supported on passive magnetic bearings is studied. Impacts on passive magnetic bearings are investigated. Impacts occur in reta [...]
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The work deals with numerical solution of 3D viscous steady incompressible flow of air passing through the entrance part of a new wind tunnel for the Aerodynamic Laborato [...]
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25.
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Bach, P.
The paper deals with stability conditions of milling machine tools. As instability a self-excited vibration development, called chatter, under certain cutting conditions [...]
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26.
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Král, J.
A long-term measurement of the wind response of the first building started in 2007and of the second building in 2009. The response monitoring is automatic and continues. [...]
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27.
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Engineering structures subjected to dynamic loading are often equipped with special devices proposed to suppress adverse motion. However, these installations are often d [...]
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The paper deals with the modeling and evaluation of stability conditions of the balanced rotating system with rigid discs supported on two anisotropic hydrodynamic bearin [...]
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29.
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Daněk, V.
The stability of the asymmetric flight regimes, where the couplings between longitudinal and lateral aerodynamic characteristics are significantly influencing each other, [...]
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The paper presents experimental results of the optical measurements of flow field around a fluttering NACA0015 profile elastically supported with two degrees of freedom i [...]
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31.
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In this paper the authors propose a new procedure for the normalization of the free vibration mode shapes of a linear structure subject to seismic load. The normalization [...]
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32.
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Rozehnal, D.
This paper describes stacionary and nonstacionary measurement of aerodynamic characteristics of the airfoil in low speed wind tunnel on the University of Defence Brno. Fi [...]
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33.
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Losík, V.
So far the static as well as dynamic aeroelastic tasks have been commonly solved by using linear models of fluid flow (p-k method, DLM) implemented e.g. in system MSC.Nas [...]
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34.
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Čečrdle, J.
Submitted paper deals with the aileron flutter of the ultra-light aircraft. It gives an assessment of influence of the additional installation of the tab regarding the ai [...]
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36.
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Linear two degrees of freedom aero-elastic system for modelling vibrations of human vocal folds was originally developed by which the physiological conditions for so-call [...]
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The paper is focused on damage identification of dynamically loaded structures using methods of soft computing including artificial intelligence. The damage and variabili [...]
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38.
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Čečrdle, J.
The paper deals with the aircraft landing shock aeroelastic response analysis. The analysis was performed as a part of the aircraft certification in order to fulfill the [...]
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The bridges, footbridges and broadcast towers create an important subset of infrastructure subjected to dynamic loading of various origins. Especially, exposed to wind, t [...]
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Stress-ribbon footbridge is the pre-stressed concrete deck, which has the shape of a catenary. Four types of pre-stressed footbridges were investigated in the wind tunnel [...]
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42.
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Čečrdle, J.
The submitted paper deals with aeroelastic optimization. It gives a summary of theory with special regard to the aeroelasticity. Main part describes optimization of the a [...]
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43.
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Hubová, O.
The wind action on structures may be represented by peak velocity pressures, in conditions of strong wind, or by the basic stochastic descriptors of the velocity fluctuat [...]
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44.
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Abstrakt: This paper describes a part of theoretical and experimental research dealing with the problem of the aeroelastic instability onset of slender rectangular beams [...]
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45.
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Čečrdle, J.
Submitted paper deals with preparation of the X-DIA aeroelastic demonstrator component wind tunnel tests. Paper is focused to design, analysis and manufacturing of new co [...]
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46.
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Frequency modal and damping characteristics of an aeroelastic model designed for experiments in the wind tunnel are studied. Based on the experimental modal analysis the [...]
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