TY - JOUR
T1 - Modeling and experimental study on near-field acoustic levitation by flexural mode
AU - Liu, Pinkuan
AU - Li, Jin
AU - Ding, Han
AU - Cao, Wenwu
N1 - Funding Information:
manuscript received January 9, 2009; accepted september 8, 2009. This work was supported in part by the national natural science Foundation of china under Grant 50675132. P. liu, J. li, and H. ding are with the school of mechanical Engineering, shanghai Jiao Tong University, shanghai, china. P. liu and H. ding are also with the state Key laboratory of mechanical system and Vibration, shanghai Jiao Tong University, shanghai, china (e-mail: [email protected]). W. cao is with the materials research Institute, The Pennsylvania state University, University Park, Pa. digital object Identifier 10.1109/TUFFc.2009.1358
PY - 2009/12
Y1 - 2009/12
N2 - Near-field acoustic levitation (NFAL) has been used in noncontact handling and transportation of small objects to avoid contamination. We have performed a theoretical analysis based on nonuniform vibrating surface to quantify the levitation force produced by the air film and also conducted experimental tests to verify our model. Modal analysis was performed using ANSYS on the flexural plate radiator to obtain its natural frequency of desired mode, which is used to design the measurement system. Then, the levitation force was calculated as a function of levitation distance based on squeeze gas film theory using measured amplitude and phase distributions on the vibrator surface. Compared with previous fluidstructural analyses using a uniform piston motion, our model based on the nonuniform radiating surface of the vibrator is more realistic and fits better with experimentally measured levitation force.
AB - Near-field acoustic levitation (NFAL) has been used in noncontact handling and transportation of small objects to avoid contamination. We have performed a theoretical analysis based on nonuniform vibrating surface to quantify the levitation force produced by the air film and also conducted experimental tests to verify our model. Modal analysis was performed using ANSYS on the flexural plate radiator to obtain its natural frequency of desired mode, which is used to design the measurement system. Then, the levitation force was calculated as a function of levitation distance based on squeeze gas film theory using measured amplitude and phase distributions on the vibrator surface. Compared with previous fluidstructural analyses using a uniform piston motion, our model based on the nonuniform radiating surface of the vibrator is more realistic and fits better with experimentally measured levitation force.
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U2 - 10.1109/TUFFC.2009.1358
DO - 10.1109/TUFFC.2009.1358
M3 - Article
C2 - 20040404
AN - SCOPUS:73649138278
SN - 0885-3010
VL - 56
SP - 2679
EP - 2685
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 12
M1 - 5307499
ER -