DYNAMIC UNCERTAINTY AND INSTABILITY STATE – RESONANCE
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2012, Vol 9, Issue 2
Abstract
The resonance state is present in all the dynamic processes of material systems that are characterized by mass and elasticity, when significant external excitations are present. Depending on the type of systems, starting with atomic structures and ending with the macroscopic ones, including the human body psycho and physiological behaviour, the resonance states, either are short and without structural changes, or lead to forced variations of the elasticity and damping parameters with the additional energy absorption.
Authors and Affiliations
Polidor BRATU
Keywords
Related Articles
- EP ID EP157086
- DOI -
- Views 70
- Downloads 0
ACTIVE NOISE CONTROL (ANC)
Acoustical Design of a Conference Hall
In the building of Caras Severin County Council from Municipiul Resita, capital of Caras Severin county, in Romania, was realized an extension and modernization of space located on the first floor where we arranged a con...
Acoustical Materials – Sound Absorbing Materials Made of Pine Sawdust
In this paper different type of acoustical materials, like absorptive barrier materials, silencers, damping treatments and vibration isolators will be described and compared. The influence of the structure and way of pla...
On the Stability of a Class of Non-Ideal Systems
A vibrating system is said ideal when its excitation is not influenced by the response of the system. When the excitation is influenced by the response of the system, the system is said non-ideal. A new degree of freedom...
The influence of the damping coefficients to the hunting motion stability of the bogies
Conventional railway vehicle systems exhibit lateral instability phenomenon doe to selfinduced oscillations of the rigid axle wheelsets, which increases component wear and imposes operating speed limits. To improve the s...