[A-4] Ultrasonics

1:15 PM - 1:30 PM JST(4:15 AM - 4:30 AM UTC)Candidate for Academic Incentive AwardCareer Explorer

[A-4-01] Simulation of vertical shift in standing-wave sound field levitation caused by jumping phenomenon

◎△Mitsuki Yoshida¹, Kohei Aono¹, Hideki Tamura², Manabu Aoyagi¹ (1. Muroran Institute of Technology, 2. Tohoku Institute of Technology)

Keywords:

near field acoustic levitation,standing wave acoustic levitation,jumping phenomenon,acoustic radiation force,vibration control

Using multibody dynamics, the transition from near-field acoustic levitation (NFAL) of a flat plate on a non-planar vibrating surface to standing-wave acoustic levitation (SWAL) utilizing the jumping phenomenon.By placing vibration sources above and below the plate and forming standing waves above and below the object after the jump from NFAL, the jump was suppressed by the upper vibration, attempting a stable shift to SWAL. The results showed that, after the levitated object jumped, it could be trapped within a standing wave sound field by appropriately exciting the upper vibration source, thereby enabling it to transition to stable suspension at a height of approximately 4.55 mm.