Influence of Damping Over the Rudder Control System of an Aircraft

The control system of the rudder of an aircraft can be modeled in a first order approximation as a system of rigid bodies that transmits instantaneously the desired motion to the movable part of the vertical tail. Howeve...

Passive and semi-active bracing systems for seismic protection: a comparative study

This paper analyses comparatively the seismic response of structures equipped by two types of dissipative bracing systems: passive devices with variable friction and semi-active devices with magnetoreological fluids. Bot...

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...

Natural Frequency Changes of Euler-Bernoulli Continuous Beams with Two Spans due to Crack Occurrence

In this paper the authors extend their previous researches on Euler-Bernoulli continuous beams with one span to Euler-Bernoulli continuous beams with two spans. By taking into consideration the four possible supports typ...

NONLINEAR APPROACH OF THE SYSTEMS BETWEEN THE DYNAMIC MODELLING DIFFICULTIES AND THE ADVANTAGES OF USING IT IN MECHANICAL DESIGNING