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Inverting amplifier; aero-elasticity
In experimental stand for measurement of aero-elasticity is each blade excited by two mechanisms with an A.C. input. When both driving signals are in phase, the swinging of blade is parallel. When one of driving signal is i...
BK - Mechanika tekutin
- 2012 •
- Gfunk
Rok uplatnění
Gfunk - Funkční vzorek
Blades Forced Vibration Under Aero-Elastic Excitation Modeled by Van der Pol
. The flutter is an aero-elastic phenomenonnthat is linked to the interaction of the flow. As a case study the dynamic properties of thenfive-blade-bunch excited by the running. The external running excitation depe...
Applied mechanics
- 2017 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Response types and general stability conditions of linear aero-elastic system with two degrees-of-freedom
delimited by the frequencies of two principal aero-elastic modes. Conditions for flutterThe unified linear variant of the general mathematical description of stability conditions for a girder with a bluff cross-section under the in...
JN - Stavebnictví
- 2012 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Flutter running waves in turbine blades cascade
and modes – of these forced running waves. Interaction of this kind of forced excitation with aero-elastic self-excitation – flutter – causes origin of flutter running waves-elastic self-excitations
Applied mechanics
- 2017 •
- D
Rok uplatnění
D - Stať ve sborníku
Flutter running waves in turbine blades cascade
and modes – of these forced running waves. Interaction of this kind of forced excitation with aero-elastic self-excitation – flutter – causes origin of flutter running waves-elastic self-excitations
Applied mechanics
- 2017 •
- O
Rok uplatnění
O - Ostatní výsledky
Relation of flutter derivatives and indicial functions in linear aero-elastic models
the aero-elastic response of slender prismatic systems until the first critical state by wayof composition of aero-elastic forces. This criterion enables to sort them roughly in three groups: (i) neutral models - ...
JM - Inženýrské stavitelství
- 2012 •
- D
Rok uplatnění
D - Stať ve sborníku
Post-critical behavior of an auto-parametric aero-elastic system with two degrees of freedom
-excited case and an assumption of a harmonic load. The boundaries between different response types that depend on the frequencies of two principal aero-elastic modes and pitch self-excited motion. The stability co...
Civil engineering
- 2020 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Stability of two-degrees-of-freedom aero-elastic models with frequency and time variable parametric self-induced forces
The lowest critical state of slender systems representing long suspension bridges can be investigated using two degree of freedom linear models.Initially,the neutral model with aero-elastic forces treated as constants can be used po...
JM - Inženýrské stavitelství
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Modelling of flutter running waves in turbine blades cascade
blades. Interaction of this kind of forced excitation with aero-elastic self-excitation – flutter – causes origin of the flutter running waves. These flutter waves of aero-elastic self-excita...
Applied mechanics
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Study of dry-friction damping effect on two simplified models of flutter oscillations
Dry-friction damping effect to reduction of self-excited vibrations due to aero-elastic instability is studied on numerical reduced model of rotating turbine wheel with 30 blades. The aerodynamic excitation arises ...
Applied mechanics
- 2019 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
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