caa a22 4500 445812346 CHVBK 20180317145215.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s00419-009-0401-3 doi (NATIONALLICENCE)springer-10.1007/s00419-009-0401-3 A standing wave acoustic levitation system for large planar objects [Elektronische Daten] [Su Zhao, Jörg Wallaschek] An acoustic levitation system is presented which can levitate planar objects that are much larger than the wavelength of the applied acoustic wave. It uses standing wave field formed by the sound radiator and the levitated planar object. An experimental setup is developed, by which a compact disc is successfully levitated at frequency of 19kHz and input power of 40 W. The sound field is modeled according to acoustic theory. The mean excess pressure experienced by the levitated object is calculated and compared with experiment results. The influences of the nonlinear effects within the acoustic near-field are discussed. Nonlinear absorption coefficient is introduced into the linear model to give a more precise description of the system. The levitation force is calculated for different levitation distances and driving frequencies. The calculation results show acceptable agreement with the measurement results. Springer-Verlag, 2009 Acoustic levitation nationallicence Standing wave nationallicence Acoustic radiation pressure nationallicence Zhao Su Institute for Dynamics and Vibration Research, Leibniz University Hannover, Appelstr. 11, 30167, Hannover, Germany aut Wallaschek Jörg Institute for Dynamics and Vibration Research, Leibniz University Hannover, Appelstr. 11, 30167, Hannover, Germany aut Archive of Applied Mechanics Springer-Verlag 81/2(2011-02-01), 123-139 0939-1533 81:2<123 2011 81 419 https://doi.org/10.1007/s00419-009-0401-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00419-009-0401-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao Su Institute for Dynamics and Vibration Research, Leibniz University Hannover, Appelstr. 11, 30167, Hannover, Germany aut NATIONALLICENCE 700 1- Wallaschek Jörg Institute for Dynamics and Vibration Research, Leibniz University Hannover, Appelstr. 11, 30167, Hannover, Germany aut NATIONALLICENCE 773 0- Archive of Applied Mechanics Springer-Verlag 81/2(2011-02-01), 123-139 0939-1533 81:2<123 2011 81 419 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer