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Physical experiments dealing with the problem of lateral pressure of granular materials proceed some years using medium-size models of the ideal non-cohesive granular mas [...]
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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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Friction influence in analysis of a single degree of freedom oscillatory system (SDOF) is either neglected or accounted for by analytical methods, assuming steady state h [...]
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Podešva, J.
The modeling of the mechanical structures with large number of degrees of freedom (DOF) was in the past the problem of the machine time and disk space. On the today’s h [...]
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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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One of the unwanted effects during braking is non-uniform heating of the brake disks and formation of hot spots. In the present contribution, an extension of Lee and Barb [...]
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The research focuses on developing a new type of vertical axis wind power generator, in which fan-shaped up-structure with floating foundation on water is used to catch t [...]
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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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Knowledge of the physical properties of materials is basis for design and mathematical modeling of complex systems, where the materials are used. Frictional properties of [...]
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The point of this paper is the comparison between the different kind of shapes turbine blades in relation to efficiency of the stage. The first part of the paper deals wi [...]
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Experimental investigation of profile and secondary losses is presented here. The loss coefficients of different types of blade cascades are evaluated, the efficiency of [...]
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The paper describes effects of end wall shaping in guide blades on steam turbine stage efficiency. CFD and measurement of straight blade cascades in a wind tunnel were pe [...]
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This paper deals with the methodology of the modelling of rotating shafts with flexible disks. Rotating shafts are modelled as one dimensional continuum on the basis of [...]
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This paper presents a simulation of 3D curved crack propagation in a steam turbine blade lock. These fatigue cracks are often initiated near a blade root contact zone. Tw [...]
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A stage with impulse blading on a drum rotor is considered. Steam leakage through the shroud and shaft sealing has been determined by means of a numerical simulation. The [...]
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Presented paper deals with computational fatigue strength prediction of high pressure level steam turbine blade pin joints. Quazi-static FE analysis of one turbine disk s [...]
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Flexural vibrations of rotating disk contain forward and backward traveling waves can be excited at certain speed of rotating disk also by a standing constant single poin [...]
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The paper presents the modal synthesis method for a mathematical modelling of rotating bladed disk vibration. The standard finite element software does not allow to cons [...]
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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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This paper is concerned with mathematical modeling of the imperfect bladed disk with friction elements, which are used to suppress blade vibration. These kinds of systems [...]
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26.
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This paper is concentrated on modelling of friction effects in bladed disk of steam turbine, which are realized by means of friction elements placed between blades shroud [...]
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