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2. Further application of parametric anti-resonance
- Creator:
- Půst, Ladislav and Tondl, Aleš
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parametric excitation, subharmonic resonance, anti-resonance effect, vibration quenching, time history, Poincare mapping, and beats
- Language:
- English
- Description:
- This contribution supplements the series of work oriented on active reduction of unacceptable vibrations by means of parametric excitation fulfilling certain conditions. Paper deals with the suppression of undesirable vibration using special parametric excitation fulfilling certain conditions. It is shown that this phenomenon can be used not ony for suppressing the self-excited vibrations or parametric resonances arising outside the region of main resonances in the vicinity of eigenfrequencies as are subharmonic resonances. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. Passive and active means for self-excited vibration suppressing: two-mass model
- Creator:
- Tondl, Aleš
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- self-excited vibration, passive and active suppression means, and parametric excitation
- Language:
- English
- Description:
- A model with two masses is considered where the upper mass is self-excited due to the negative linear damping component and the lower mass represents the damped foundation subsystem. The passive means represents the positive linear damping of foundation subsystem and the active one the linear parametric excitation due to the periodic changing of the foundation mounts stiffness. In the case when only passive means are used the optimal tuning can be reached when stability limits for both vibration modes merge together. The condition for such tuning of the system in question is formulated. But when the stability condition is not met then this tuning of the system is not suitable for using in addition the active means in the form of parametric excitation. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
4. To the parametric anti-resonance application
- Creator:
- Tondl, Aleš and Půst, Ladislav
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- parametric excitation, parametric resonance, parametric anti-resonance, and additional parmetric excitation
- Language:
- English
- Description:
- A new application of the parametric anti-resonance is discussed. This phenomenon can be used not only for suppressing self-excited vibration or to reduce the externally excited vibration but also to suppressing self-excited vibration or to reduce the externally excited vibration but also to suppress the parametric resonance when certain conditions are met. Another aim is to stimulate further investigations and the practical applications. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
5. To the problem of self-excited vibration suppression
- Creator:
- Tondl, Aleš
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- self-excited vibrations and passive and active means for vibration suppression
- Language:
- English
- Description:
- The aim of this contribution is to present a basic survey of publications dealing with the means of vibration suppression in several kinds of self-excitation. The attention is given to passive and active means using parametric excitation. A special attention is given to the latter and the necessary steps for answering important questions are formulated to initiate further investigation and especially application to real systems. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public