Bi-dimensional finite element analysis for modal separation of a circular cylindrical WW-USM

Yu, Tai-Ho; Yang, Shan-Yi; Lee, Chen-Liang; Yin, Ching-Chung

doi:10.1016/j.finel.2011.01.006

Cited by 16 publications

(4 citation statements)

References 19 publications

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“…For wave propagation, ignoring damping, the governing finite element equation is expressed as M f̈U g SfU g fF ext g; (11) where [M ] is the mass matrix, [S] is the stiffness matrix, fU g is the displacement vector, f̈U g is the acceleration vector, and fF ext g is the external force vector. Equation (11) is solved using the Newmark time integration method [29,30].…”

Section: Research Articlementioning

confidence: 99%

“…Further, the stress and displacements fields were determined by numerical simulation at several frequencies and slope angles. Recently, using the bi-dimensional finite element analysis (Bi-d FEA) method, Yu et al [11] described a modal separation model, which improved the performance of wedge wave ultrasonic motors. Tomoda et al [12] imaged the near-gigahertz flexural acoustic waves propagating in a thin gold wedge, which were deposited on an ultrathin silicon nitride slab, by using an ultrafast optical technique.…”

Section: Introductionmentioning

confidence: 99%

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Study of the impact of truncations on wedge waves by using the laser ultrasound technique

2015

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This research focuses on measuring the impact of truncations on the dispersion characteristics of wedge waves propagating along the wedge tip by using the laser-generated ultrasound. First, the finite element method was used to simulate laser-induced wedge waves and the dispersion curves were obtained by using the 2D Fourier transformation method. Pulsed laser excitation and laser-based wedge wave detection were also utilized to investigate these characteristics experimentally. For the 20° and 60° line wedges, both experimental and numerical results indicated that a nonideal wedge tip had great impact on the wedge waves. The modes of the 20° line wedge with truncations presented anomalous dispersion, low mode closed to high mode in high frequency, and the characteristics of antisymmetric Lamb waves as truncation increased. Meanwhile, the modes of the 60° line wedge with truncations showed the characteristics of antisymmetric Lamb waves, and the A₁ mode was also observed clearly. The findings of this study can be used to evaluate and detect wedge structure.

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Section: Research Articlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of the impact of truncations on wedge waves by using the laser ultrasound technique

2015

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“…There are many modal extraction methods in the ANSYS [10]. Block Lanczos method was used to complete modal analysis.…”

Section: A Resonant Frequency Analysismentioning

confidence: 99%

Analysis of the sensitivity of DN1 Coriolis mass flow sensor

Zheng

Liu

2013

2013 IEEE 11th International Conference on Electronic Measurement &Amp; Instruments

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According to the clamped-clamped structure of DN1 Coriolis mass flow sensor, the static deflection curve of the measuring tube with driving force and the torsion strain curve of the tube with Coriolis force are derived by force method. The equivalent elastic rigidity of the measuring tube calculated from the static deflection curve can be used to derive the resonant frequency. The maximum sensitivity and its location can be calculated from the torsion strain curve, which provides an important theoretical basis for the location optimization of the detection point. The resonant frequency and the sensitivity of DN1 Coriolis mass flow sensor are analyzed by the finite element analysis software ANSYS. By comparison, the result of theory analysis coincides exactly with ANSYS simulation, which provides an important theoretical basis for the sensor structure optimization.

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“…Ultrasonic motors (USMs) offer a multitude of advantages in comparison to electromagnetic motors, such as the ability to generate motion at the nanometer scale; being compact, energy saving, and large driving; and can hold forces in small sizes and conduct silent nonmagnetic operations, especially at the millimeter scale [ 1 , 2 , 3 , 4 , 5 ]. The aforementioned advantages make USMs highly suitable for ultraprecise positioning in specialized environments and endow them with significant potential in the fields of aerospace mechanisms, optical instruments, biological equipment, and micro-electromechanical systems [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Experimental Research of a Dual-Vibrator Traveling Wave Ultrasonic Motor

Dong

Xu²

2023

Micromachines

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In order to facilitate the widespread application of ultrasonic motors, it is essential to conduct a quantitative study aimed at enhancing their performance. The present paper provides a comprehensive theoretical analysis of an ultrasonic motor equipped with dual vibrators, enabling operation in both the single-driven and dual-driven modes, thereby enhancing versatility in terms of performance adjustment. This study provides a detailed examination of the motor’s unique performance characteristics and its varying output responses to different driving signals. Experimental investigations are conducted in both the single-driven and dual-driven modes to validate theoretical predictions. The results demonstrate that the motor exhibits a maximum speed, torque, and power that are 1.59, 1.28, and 1.62 times higher than those of the single-driven stator, respectively. A conclusion can be drawn that the motor will attain the desired performance when operated in the appropriate driven mode.

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Bi-dimensional finite element analysis for modal separation of a circular cylindrical WW-USM

Cited by 16 publications

References 19 publications

Study of the impact of truncations on wedge waves by using the laser ultrasound technique

Study of the impact of truncations on wedge waves by using the laser ultrasound technique

Analysis of the sensitivity of DN1 Coriolis mass flow sensor

Performance Analysis and Experimental Research of a Dual-Vibrator Traveling Wave Ultrasonic Motor

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