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This study investigated the influence of the molten slag as fine aggregates of concrete on the structural performance of RC beams. In the loading test, the mechanical res [...]
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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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The loss of elastic stability caused by both lateral and torsional deformations of bent beams is called lateral buckling. The most typical cases of lateral buckling of be [...]
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The hypothesis was stated, that the relaxation oscillation emerge in the surface layers of wheel and rail, by the accelerating and braking period of the rail vehicles. Th [...]
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The paper describes a new method of analysis of the non-stationary response of a bridge model subjected to the wind load. The analysis is based on the decomposition of th [...]
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Wind excited vibrations of slender structures such as towers, masts or certain types of bridges can be reduced using passive or active vibration absorbers. If there is av [...]
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The gable wall standing over the entrance into a neo-gothic church and fixed on both sides of its base into towers, swayed with well-visible amplitudes out of its plane i [...]
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8.
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Nánási, T.
The list of all possible boundary conditions corresponding to particular differential operator is much greater than usually presented in open literature. Gallery of vario [...]
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There are mechatronic applications, where a slender beam or plate is subjected to static magnetic force generated by an electromagnetic actuator consisting of a solenoid [...]
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In this paper there is described a method for measurement of resonant frequency of longitudinally vibrating aluminum bar. The bar is of a shape of tube and inside in the [...]
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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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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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One of the possibility, how to reduce amplitude of transversal vibration of rotors is to put together their rotating and no-rotating part by the squeeze film damper. This [...]
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Ferfecki, P.
For the purpose of efficient diagnostics of fault conditions the influence of transverse fatigue crack on dynamical behaviour of a rotor system supported by active magnet [...]
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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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It has been found there is a probability of a sudden break of all 20 bolts fastening primary header cover. This cover separates the medium of the primary circuit header f [...]
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Analysis of laminated plates under static and transient dynamic loading is presented by the meshless local Petrov-Galerkin (MLPG) method. ReissnerMindlin theory is used t [...]
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This article is concerned with comparison of velocity field size depending on size of the eccentricity in leakage joints of centrifugal pumps. Eccentricity is created by [...]
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Axisymmetric circular plates subjected to stationary and transient dynamic loads are analyzed in the presented paper. Effect of viscous damping is also considered. Dynami [...]
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The vibration amplitude of rotors excited by imbalance can be significantly reduced if damping devices are inserted between the rotor and its stationary part. To achieve [...]
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This paper is aimed at reducing vibrations of bladed disk in particular operating state. The damping element used in this contribution is realized by a strap with isoscel [...]
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Abstrakt: In all power plants (classical and nuclear) are used safety relief valves. After opening of this ones the mass of fluid (gas or steam) begin to move with very h [...]
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23.
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Bayer, Z.
The contribution deals with a group of 13 equations of state (EOS), predominantly of the van der Waals type, both classical and also newly developed in the Institute. In [...]
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To a basic one-mass self-excited system a tuned absorber is attached the motion of which is influenced by soft impacts. The self-excitation is considered as of van der Po [...]
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The impact effects in gear mesh represent specific phenomena in the dynamic investigation of highspeed light transmission systems with kinematic couplings. They are cause [...]
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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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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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Sobotka, J.
The classical mathematical model of beam-columns contains derivatives of functions for the bending moment, the shear force, the axial force, the slope, and the deflection [...]
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The beam with an axial force is coupled by an elastic layer of Winkler type with the pretensiled string. It is subjected to a row of moving forces. The theoretical model [...]
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30.
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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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