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Characterization of Bearings Nonlinearities Influences on Viaducts Dynamic Responses
(Universitatea "Dunărea de Jos" din Galați, 2012)
In view of viaducts designing and safety exploitation it is necessary to
evaluate both theoretically, and instrumentally the dynamic behaviour for
impulsive external actions. In this study the dynamic response for a ...
A Study of Body Posture on Human Comfort Under the Influence of Whole-Body Vibrations for the Rail Passengers
(Universitatea "Dunărea de Jos" din Galați, 2010)
When traveling by train, passengers are exposed to vibration. A well designed seat will attenuate the vibration path to the person in the frequency region where it is the most perceptible, between 3 and 10 Hz. This paper ...
The Influence of Nonlinear the Elastic Character of Viscoelastic Systems on the Dynamic Response of Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2010)
Bridges and viaducts represent vital engineering structures which are component of terrestrial communication lines, therefore reducing their exposure to factor originating from natural or anthropogenic hazards has no ...
Dynamical Response Analysis of a System with one Degree of Freedom Stresses by the Different Pulse Excitation Functions
(Univeritatea "Dunărea de Jos" din Galați, 2010)
Viscoelastic systems embedded in structures such as bridges are subject to various dynamic loading from traffic. A dynamic study of these structures requires more accurate definition of disturbance function parameters: ...
The Analytical Exact Solutions of Non-Linear Differential Equations Which Describe the Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2010)
The movements of many material systems can be described by
differential equations that have coefficients that depend on time. It is
difficult to determine the solutions of these equations. Although many
concrete problems ...
Filter Signals a First Step in Interpreting Experimental Results
(Universitatea "Dunăread de Jos" din Galați, 2010)
After recording and storage of experimental data, a first step in their
processing is filtering, ie, removal of parasitic components (noise)
accompanying the signal due from other machines or equipment in service
or ...
Damage Detection at Vibration Passive Isolation Devices
(Universitatea "Dunărea de Jos" din Galați, 2011)
This paper deals with some theoretical aspects combined with experimental
tests regarding early damage identification in vibroisolation devices. This
study was a natural fall-back of an analysis regarding the behaviour ...
Influence of the Behavior of Nonlinear viscoelastic Systems Bearing on the Dynamic of Bridge Structures
(Unioversitatea "Dunărea de Jos' dibn Galati, 2011)
Modern structures of bridges and viaducts require dynamic isolation
systems, designed to eliminate or mitigate the destructive effects of intense
traffic and seismic activity on these constructions. This paper studies ...
Vibration Measurement Equipment
(Universitatea "Dunărea de Jos" din Galați, 2006)
This paper describes the principles of operation of typical instrumentation
used in the measurement of shock and vibration. It deals with the
measurement of parameters which characterize the total (broad-band)
signal.
Measuring and Controlling of Noises and Vibrations Generated by Industrial Sources
(Universitatea "Dunărea de Jos" din Galați, 2008)
This paper describes a methodology for measuring and control of noises
and vibrations generated by industrial sources, such as: construction
activities, equipments which use vibrations into working process, etc. ...