This paper presents an overview of an interactive multimedia vibrations program called GT Vibrations. GT Vibrations contains a series of modules that deal with elementary vibrations, transient vibrations, and continuous systems. The program is intended to be used as a supplemental tool for undergraduate courses in vibrations and system dynamics at Georgia Tech. The underlying goal of the progra...

Sensory systems are designed to extract behaviorally relevant information from the environment. In seeking to understand a sensory system, it is important to understand the environment within which it operates. In the present study, we seek to characterize the natural scenes of tactile texture perception. During tactile exploration complex high-frequency vibrations are elicited in the fingertip...

one of the most important challenges in the development of urban railways network is the effects of railway vibrations on human and adjacent structures. although various investigations into the sources of railway vibrations have been conducted, very few research works have been reported on the influences of track geometry parameters on the level of vibrations. this is addressed in this research...

The article contains generalized systems of equations describing the vertical and longitudinal-angular vibrations main parts tractor with mathematical model hierarchical linear oscillation tractor, irregularities roads, taking into account rigidity damping. It includes systems: skeleton over propellers a on an uneven road; cab rear walking roads. Equation have also been compiled that describe o...

the useful and efficient method of finite element (fem) has a drawback for dynamic analysis of complex structures, especially in the medium and high frequency range. to overcome this fundamental difficulty, application of statistical energy analysis (sea) and power flow technique has been suggested. as the sea is based on the average response of structure and statistical properties of its reson...

Efficiency analysis of sonic drilling wells and the choice rational operational modes drill bit vibration loading to increase rate penetration was carried out. The are studied on basis an assessment power process with a cavitation hydrovibrator. This paper presents approach calculating mechanical oscillatory bit. uses developed mathematical model dynamics hydraulic vibrator string. describes in...

In this study, rotating flexible shaft-disk system having flexible beams is considered as a dynamic system. After neglecting nonlinear terms, torsional vibration of the shaft-disk system and lateral and longitudinal vibration of the flexible beam are still coupled through the motor speed. The system has three natural frequencies; the flexible shaft-disk system torsional natural frequency, the f...

In Drosophila melanogaster, antennal hearing organs mediate the detection of conspecific songs. Combining laser Doppler vibrometry, acoustic near-field measurements and anatomical analysis, we have investigated the first steps in Drosophila audition, i.e. the conversion of acoustic energy into mechanical vibrations and the subsequent transmission of vibrations to the auditory receptors in the b...

The broad application of steel and steel-concrete bridges has caused significant vibration noise problems. Although the channel composite girder is a commonly used bridge type, transmission performance structural optimization design (concrete deck, stiffeners, transverse connection components, etc.) from perspective control have not been well studied. In this paper, experimental numerical appro...

Longitudinal vibration of piano strings greatly contributes to the distinctive character of low piano notes. In this paper a simplified modal model is developed, which describes the generation of phantom partials and longitudinal free modes jointly. The model is based on the simplification that the coupling from the transverse vibration to the longitudinal polarization is unidirectional. The mo...