... element analysis noise abatement piezoelectric actuators plates (structures) porosity sandwich structures structural acoustics structural panels vibrations active sandwich panels multiphysics vibroacoustics poroelasticity piezoelectricity A sandwich panel is a special class...

... parameters of the inner front wheel. 03 03 2010 14 04 2011 28 11 2011 28 11 2011 acoustic noise measurement creep noise abatement railways steering systems time-domain analysis wear wheels curve noise is generated through a dynamically unstable response of the train...

... elastic constants inclusions noise abatement springs (mechanical) structural acoustics vibrations heterogeneous blanket elastic material vibration absorber passive vibration control passive noise control mass interaction Heterogeneous (HG) blankets consist of a layer of elastic...

... propellers) has been analyzed. Different arrangements of PZT patches have been examined for internal noise abatement. The results derived from these numerical investigations show that the control authority strongly depends on number and placement of the PZTs. For a given number of PZTs patches and constraint...

... influenced markedly the rotor aerodynamics. 06 10 2009 19 01 2011 26 07 2011 26 07 2011 acoustic field aeroacoustics aerodynamics anechoic chambers (acoustic) blades fans microphones noise abatement vortices As prevailing noise regulations become more stringent...

... systems noise abatement In order to accurately simulate the sound propagation inside complex duct networks in the presence of flow, it is important to know the flow distribution inside different parts of the network. It is well known that air flow inside a duct has a large effect on the acoustic...

... reduction performance of the void decoupling layer. 21 07 2009 07 06 2010 16 09 2010 16 09 2010 acoustic impedance acoustic noise acoustic wave absorption acoustic wave transmission noise abatement plates (structures) structural acoustics underwater acoustic propagation...

... that inherits all the information of the optimization best configuration has been approved. 06 10 2006 26 10 2009 15 03 2010 15 03 2010 automobiles damping genetic algorithms noise abatement vibration control acoustic transfer function damping treatment optimization...

... feedback hierarchical systems jet engines noise abatement plates (structures) structural acoustics vibration control Vibration neutralizers have been used successfully for decades to control vibration due to harmonic disturbances. Although typically used as a tuned device, Fuller et al. ( 1...

... acoustic field acoustic intensity acoustic resonance acoustic resonators acoustic wave transmission aeroacoustics blades fans noise abatement rotors stators To further validate the resonator model as a control source under flow-excitation conditions, the next step was to characterize...

... and damping constant γ = 0.01 11 05 2006 18 06 2008 14 10 2008 beams (structures) damping noise abatement partial differential equations plates (structures) vibrations viscoelasticity laminated viscoelastic beam plate nonuniform interface pressure slip...

... ( 0.237 m ) . The shape of the embossed panel section in Fig. 8 looks good correspondence with the 2D pattern of IMEP shown Fig. 3b . 09 06 2004 20 02 2007 21 03 2008 embossing vibrations noise abatement acoustic intensity particle swarm optimisation...

... with measurements on an automotive disk brake. 06 10 2006 15 11 2007 30 01 2008 automotive components brakes mechanical stability noise abatement piezoceramics sliding friction vibration isolation Brake noise that is dominated by frequencies above 1 kHz is usually...

.... When the computation efficiency is concerned, the Biot model will be more desirable. 30 10 2005 23 01 2007 vibrations acoustic wave absorption noise abatement viscoelasticity viscoelastic materials Biot model minioscillator model finite element method Nowadays...

... simulations. acoustic porous materials fibrous material rigid frame finite element compression acoustic materials porous materials acoustic wave absorption acoustic wave propagation acoustic wave transmission finite element analysis architectural acoustics vibrations noise abatement...

... a conventional treatment. Grosveld and Mixson ( 6 ) also reported that an alternative configuration featuring a limp mass for vibration isolation can be more effective. sandwich panels structural-acoustic optimization truss core structural acoustics noise abatement sandwich structures honeycomb...

... the ship and increases interior and radiated noise levels. marine vehicles vibrations vibration control noise abatement acoustic noise 27 01 2006 05 07 2006 2006 American Society of Mechanical Engineers ...

... silencers exhaust systems aeroacoustics vibrations acoustic noise noise abatement diesel engines The higher and higher penetration of diesel engines in the passenger car market is due to their higher efficiency and, thereby, reduced fuel costs. Although diesel engines are favorable in terms...

... acoustic noise noise abatement vibrations machine bearings rotors stators Rieger N.F. , 1986 , Balancing of Rigid and Flexible Rotors , The Shock and Vibration Information Center, United States Department of Defense. Wilcox J.B. , 1967 , Dynamic Balancing of Rotating...

...David A. Bies, Author and; Colin H. Hansen, Author; Svante Finnveden, Reviewer 21 03 2005 reviews noise abatement engineering Book Review David A. Bies and Colin H. Hansen: Engineering Noise Control, Theory and Practise , 3rd edition, Spoon Press, London/New York, 2003...