Acoustics and Vibration of Mechanical Structures AVMS-2017

This book is a collection of papers presented at Acoustics and Vibration of Mechanical Structures 2017 AVMS 2017 highlighting the current trends and state-of-the-art developments in the field. It covers a broad range of topics, such as noise and vibration control, noise and vibration generation and propagation, the effects of noise and vibration, condition monitoring and vibration testing, modeling, prediction and simulation of noise and vibration, environmental and occupational noise and vibration, noise and vibration attenuators, as well as biomechanics and bioacoustics. The book also presents analytical, numerical and experimental techniques for evaluating linear and non-linear noise and vibration problems (including strong nonlinearity). It is primarily intended for academics, researchers and professionals, as well as PhD students in various fields of the acoustics and vibration of mechanical structures.

Inhalt
Fractional calculus: Fundamentals and applications.- An approximate method for solving a vibration equation involving fractional derivatives.- Acoustic metamaterials: Theory and application.- Analytical study of the oblique impact of an elastic sphere with a rigid flat.- Free oscillations of Euler-Bernoulli beams on nonlinear Winkler-Pasternak foundation.- Vibration of nonlinear nonlocal elastic column with initial imperfection.- Flap-wise vibrations of axially functionally graded and centrifugally stiffened beams with multiple masses having rotary inertia.- Study of vibrations of a robotic arm, using the Lagrange equations with respect to a non-inertial reference frame.- Selection of measurement strategy for the assessment of long-term environmental noise indicators using multi-criteria optimization.- Phonic comfort in urban transport on rails.- Application of artificial neural network to prediction of traffic noise levels in the city of Ni, Serbia.- Noise and aggressiveness in the workplace.- Estimation, assesment and effects of workers exposure to physical noxae.- Analysis of acoustic response and treatment of a rehabilitated lecture room.- An appraisal of the sound field generated by helical gear pairs with different helix angles, manufactured by various technologies.- Micro turbo engine JetCAT P80 acoustic evaluation.- Procedures for measuring and modelling underwater acoustic field parameters.- Experimental human walking and virtual simulation of rehabilitation on plane and inclined treadmill.- Prototype device for mastoid obliteration in pediatric cholesteatoma patients.- Comparative analysis of the noise and vibration transmitted to the operator by a brush cutter.- Fluid dynamics in symplified pre and post-stented coronary bifurcation.- Low cost adaptive plantar supporters for soil vibration absorption.- Influence of sound physical characteristics on some human physiological parameters.- Relative and absolute angles computed from pathologic gait data.- Analysis of temperature variations in the hand-finger assembly as a result of exposure to vibration of tools.- An example of vibration and low frequency noise assessment for railway line.- Vibration analysis of the boiler fan for the fresh air a case study.- Application of mechanical oscillations in medicinal plants sorting process.- Active vibration control of test equipment through feedback algorithm.- Shaking table for the analysis of pillars with top mass.- Dynamic analysis of the interaction chmber for the ELIADE array.- Considerations regarding vibrating platforms electromagnetically driven.- A MEMS electro-mechanical device for scanning and energy-harvesting based on moving magnets matrix.- Dynamic modeling of vibro-compaction process on cohesionless granular soils.- Determination of flexural critical speed of a rotor by vibroacustical signal analysis.- Vortex induced vibration and wind flow around bridge cables.- Crack localization in L-shaped frame.- Assessments on operational modal identification refining of a structural element.- Gear drive system simulation with different model of input speed.- Dynamic analysis of the inverted tooth chain plates moving towards sprocket.- Theoretical and experimental analysis for a pendulum-based absorber system used in vibration isolation.- Universal absorber applied to NVH in EV's powertrain.- The analysis of a distribution mechanism for the Miller-Atkinson cycle.- The transitory vibrations for a variable compression ratio mechanism.- Gear drive system simulation of input parameters effect on rattle.- Experimental study of road traffic vibrations impact on heritage buildings in Braila, Romania.- On dynamics of a dual vibration insulation device based on elastomeric kernel and rolling friction dissipation.