Random vibrations of Duffing oscillator with nonlinear elastic characteristic of exponential type

We present a method for estimating the power spectral density of the stationary response of Duffing oscillator with nonlinear elastic force of exponential type. The method is based on the idea that a nonlinear system may...

INFRA-SOUND IMPACT UPON HUMAN BODY

Limits of the Discrete Fourier Transform in Exact Identifying of the Vibrations Frequency

This paper present the limitations encountered by using the Discrete Fourier Transform for the analysis of vibration signals. Difficulties in determining the precise frequencies appear particularly in cases where the acq...

Computational Assessments on Transversal Vibration of Large Beams due to Impulsive in-Motion Actions

This study deals with the area of condition monitoring and dynamic damage detection in composites based structural parts embedding insulation systems. The paper contains a briefly presentation of some particular and inad...

Chaotic Behavior of Helical Gear-Pair Systems Non-Linear Parametrically Excited

The increased interest for improved gear design has led to extensive research into the field of nonlinear dynamics of such systems. The paper reveals a complex dynamic model to study the chaotic behavior in a gear-pair s...