TY - JOUR ID - 72727 TI - Numerical Prediction of Stator Diameter Effect on the Output Torque of Ultrasonic Traveling-wave Motor, using Finite Elements Simulation JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - haji aboutalebi, farhad AU - Manouchehrifar, Afshin AU - Rahafrouz, Hamed AD - Engineering, university of Esfahan AD - Mechanical Engineering, Islamic Azad University of Khomeinishahr Y1 - 2016 PY - 2016 VL - 29 IS - 5 SP - 715 EP - 721 KW - Ultrasonic Traveling KW - Wave Motor KW - Increasing the Diameter KW - Output Torque KW - Rotational Speed DO - N2 - Nowadays, piezoelectric materials have wide applications in various industries. Therefore, investigation of these materials and their applications has a special importance. In this paper first, the natural frequencies of a traveling-wave piezoelectric motor are achieved, using finite elements simulations. Then, applying an alternative electrical voltage to the piezoelectric ring, a traveling wave is generated in the stator, and the stability, damping effects, and characteristics of the traveling wave are studied. Additionally, the output torque and rotational speed of the motor are obtained and validated by experimental values. Finally, the stator diameter is increased and its effects on the output torque and rotational speed are inspected. The results reveal that the output torque and maximum rotational speed of the enlarged motor respectively increases and decreases. UR - https://www.ije.ir/article_72727.html L1 - https://www.ije.ir/article_72727_c62b67b916a061a008be4b0d8d5263ad.pdf ER -