Suppressing action of piezoelectric ceramic support on transverse vibration and support reaction of beam
HE Jincheng1,2, CHEN Guoping1,2, TAN Xing1,2, CHEN Weiting1,2, HE Huan1,2
1.State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2.Institute of Vibration Engineering Research, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Abstract:When the multi span structure vibrates under the transverse load, there is often a large support reaction force at the connection between the support and the base. To solve this problem, taking the double supported beam system as an example, based on the principle of piezoelectric energy exchange, the cylindrical piezoelectric ceramic support is used as the damping element, and its damping effect is analyzed theoretically. Based on Hamilton principle, the vibration differential equation of the system under piezoelectric electromechanical coupling boundary conditions is derived. Combined with the finite element method and partial differential equation numerical calculation method, the modal analysis and dynamic response calculation of electromechanical coupling systems with different kinds of piezoelectric materials are carried out. The results show that the piezoelectric ceramic support can effectively suppress the vibration and support reaction transmitted from the support to the base in multi span structures.
Key words: piezoelectric ceramics; finite element analysis; dynamic response; modal analysis
何晋丞1,2,陈国平1,2,谭星1,2,陈卫婷1,2,何欢1,2. 压电陶瓷支承对梁的横向振动与支反力抑制作用[J]. 振动与冲击, 2022, 41(23): 265-274.
HE Jincheng1,2, CHEN Guoping1,2, TAN Xing1,2, CHEN Weiting1,2, HE Huan1,2. Suppressing action of piezoelectric ceramic support on transverse vibration and support reaction of beam. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 265-274.
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