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Finite-element Analysis and Test Study on a New Piezoelectric Friction Damper

- , 2015, DOI: 10.3969/j.issn.1000-0844.2015.02.0377
Abstract: 利用压电陶瓷的压电效应,研发出一种基于半主动控制的新型压电摩擦阻尼器,介绍其构造和工作原理。建立新型压电摩擦阻尼器的ABAQUS有限元模型,得出阻尼器在不同工况下的滞回曲线,并进行其滞回性能试验,用试验值验证阻尼器有限元模型的相似性,两者得到的阻尼器摩擦力变化趋势相近;采用ANSYS建立安装有新型压电摩擦阻尼器的输变电塔模型,利用MATLAB计算输变电塔模型各层的加速度响应,验证新型压电摩擦阻尼器在实际结构中的摩擦耗能性能,为其工程应用提供理论依据。
Using the piezoelectric effect of piezoelectric ceramics,this article developed a new piezoelectric friction damper based on semi-active control theory,and described its structure and working principle.The ABAQUS finite-element model of the new piezoelectric friction damper was established.By the model,the damper hysteresis curve was obtained under different conditions,and a hysteretic damper performance test was conducted.Simultaneously,the finite-element calculations and experimental values of the damper were compared.By comparing the hysteresis curves of the finite-element simulation and the hysteretic damper performance test,the following conclusions could be obtained. The hysteresis curve of the damper which installs one piezoelectric ceramic actuator was full,and the friction energy performance of the new piezoelectric friction damper was good;the hysteresis curve of the damper which installs two piezoelectric ceramic actuators was fuller than installing one piezoelectric ceramic actuator,thus by installing two piezoelectric ceramic actuators,the friction damper could obtain better friction energy performance;the cause of the deviation between the theoretical and experimental values was that the driver displacement of the piezoelectric ceramic actuator was small and was affected by many manufacturing factors;so the actual output of the damper was small.Then;a model of a new piezoelectric friction damper installed on a power transmission tower was established by ANSYS;and the acceleration response of the layers of the power transmission tower model was computed by MATLAB.The friction energy performance of the new piezoelectric friction damper in the actual structure could be verified.The following conclusions could be obtained through the finite-element simulation:the effect of the damping control of the new piezoelectric friction damper installed on a power transmission tower was good,and the new piezoelectric friction damper had good practicability.This article can provide a theoretical basis for the engineering applications of the damper.
A Piezoelectric Friction-Inertial Linear Motor Based on Piezoelectric Single-Crystal Cymbal Displacement Amplification Mechanism  [PDF]
Xing Xiaohong, Guo Mingsen, Chen Jialin
- , 2017, DOI: 10.16356/j.1005-1120.2017.01.055
Abstract: Piezoelectric friction-inertial motor is known for its promise for a long-range and high-resolution motion. The movement of the slider/rotor of the motor is achieved by stick-slip effect. We report a relaxor-based-ferroelectric-single-crystal cymbal actuator and a miniature piezoelectric friction-inertial linear motor (abbreviated as PFILM) fabricated with the cymbal actuator. The cymbal actuator is fabricated with a 10 mm diameter disk of 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 single crystal. The displacement of the cymbal actuator increases almost proportionally from 0 to 23 μm with driving voltage up to 500 V, and the minimal hysteresis is observed. The cymbal-PFILM with 20 mm motion range works under driving voltage frequency of ca. 100 Hz to ca. 5 kHz, the fastest speed is obtained with 3.5 kHz and the no-load speed is 14 mm/s and the maximum thrust force is 98 mN. Compared with a PFILM based on multilayer piezoelectric ceramic, the proposed motor has a larger stroke under DC/quasistatic input voltage in fine motion mode, but a smaller driving force in long-travel mode due to lower resonance frequency.
A Resistivity Gradient Piezoelectric FGM Actuator
SUAdikary,Zhongyan MENG,Dengren JIN,

材料科学技术学报 , 2000,
Abstract: A resistivity gradient actuator based on lead zirconate titanate ceramics was successfully developed and the bending deflections up to 140 mu m were obtained. The actuator material was a matrix of PZT ceramic into which smooth gradient of piezoelectric activity was introduced. The application of an electric field then causes the actuator to bend due to differential strains induced by the piezoelectric effect. The resistivity gradient of the actuator was achieved by doping PZT with suitable donor and acceptor dopants. PZT powder was modified and synthesized by using two stage powder fabrication method. The actuator was fabricated by uniaxial pressing followed by isostatic pressing with two layers of different resistivities.
PZN-PZT Piezoelectric Multilayer Actuator with Ag/Pd Electrodes
Xiangping JIANG,Jun LIAO,Wangzhong ZHANG,Guorong LI,Daren CHEN,Qingrui YIN,

材料科学技术学报 , 2000,
Abstract: The PZN-PZT ceramic with high piezoelectric constant d(33) sintered at 1130 degrees C was prepared. The PZN-PZT multilayer actuator (MLA) with Ag/Pd as an internal electrode was fabricated by tape casting.
Piezoelectric Constants Measured from Converse Piezoelectric Effect and Piezoelectric Ceramic Actuators

CHEN Daren,LI Guorong,YIN Qingrui,

无机材料学报 , 1997,
Abstract: The piezoelectric constants d33 and d31 under weak and stronger field were measured from strain S vs electric field E curves for the converse piezoelectric effect. It was shown that on the curves there is a critical field Eb from which strains and d33, d31 were obviously increased, and the result was discussed in the view of reorientation of 90° domain intrinsically existed in piezoelectric ceramics. This method of measuring d33, d31 is simple and convenient, as well as more practical, especially for piezoelectric ceramic actuator, as compared with that usually obtained them from positive piezoelectric effect.
Design and Fabrication of the Large Thrust Force Piezoelectric Actuator  [PDF]
Shyang-Jye Chang,Jing Chen
Advances in Materials Science and Engineering , 2013, DOI: 10.1155/2013/912587
Abstract: This paper presents a novel piezoelectric actuator containing double pushers. By using finite element analysis software, this study simulated the vibration mode and amplitude of piezoelectric actuators. The Taguchi method was used to design the parameters of piezoelectric actuators including length, width, height, and electrodes setting. This paper also presents a discussion regarding the influence that the design parameters had on the actuator amplitudes. Based on optimal design parameters, a novel piezoelectric actuator containing double pushers is produced and some thrust tests are also carried out. From the experiment results, the piezoelectric actuator containing double pushers can provide a greater thrust force than that of traditional actuators containing a single pusher as the preload is greater. Comparing with the traditional actuators, the thrust force of new actuator can be increased by 48% with the double preload. 1. Introduction In 1982, the first piezoelectric actuator was produced by Shinsei. In 1987, piezoelectric actuators were installed in dot matrix printers and mass-produced; this was the first time piezoelectric actuators were used in commercial applications. Canon and Minolta successively applied piezoelectric actuators in the autofocus and shutter units of cameras. In the late 1990s, Toyota used piezoelectric actuators in the automobile industry, specifically in the suspension system and seat adjustment controls of vehicles. In 1995, Epson used piezoelectric actuators to develop print heads in ink-jet printers, thereby beginning the industrial trend of applying piezoelectric actuators in various microsystems [1]. Piezoelectric actuators are categorized into standing-wave and traveling-wave actuators according to the drive modes. The vibration mode of traveling-wave actuators is a ripple, which travels in an oval trajectory. The motion trajectories of standing-wave actuators are oval, linear, or of other shapes. The biggest difference between the two types is the wave node, which can be used as a reference when designing fixed points. Traveling-wave actuators do not contain wave nodes, thereby limiting the mechanical design; standing-wave actuators possess wave nodes, which ensure relatively simple designs that are easily miniaturized. According to the drive signals, piezoelectric actuators are categorized into single-phase [2–5], double-phase [6–9], and multiphase actuators [5, 10–12]. The motion trajectory of single-phase piezoelectric actuators is nearly linear. Because of a lack of phase differences, single-phase piezoelectric
Development of a New Piezoelectric Actuator with Slits  [PDF]
Yasutomo Uetsuji,Hiroyuki Kuramae,Kazuyoshi Tsuchiya,Hidetoshi Sakamoto
ISRN Materials Science , 2013, DOI: 10.1155/2013/172054
Abstract: A piezoelectric actuator was developed for fluid pumps in health monitoring systems. We devised a piezoelectric actuator with some slits, which allows the stretching and contracting deformation in in-plane direction and creates large deflection in out-of-plane direction. The static behaviors under uniform electric field have been analyzed by finite element method. And then, the optimum geometry of slits was searched by response surface methodology for unimorph and bimorph actuators to output the largest deflection under various fixed conditions. The computational results indicated that a bimorph actuator with cross-shaped slit under outside-fixed condition has superior performance for fluid pumps. The proposed slit-inserted actuators have been manufactured as an experiment. As a result, it was verified that the developed actuator can amplify the deflection compared with conventional nonslit actuators. 1. Introduction New medical devices, which can extract blood and detect some health indicators such as blood sugar count, are desired for an aging society in Japan. The actuator for blood extraction pump is one of the important elements for these health monitoring systems. In case of a prototype of the above-mentioned health monitoring system called “(Biomimetic-Medical Electronics Machine) Bio-MEM” [1], a piezoelectric element was employed for the pump actuator because of its fast response and precession control. In case of other various electromechanical devices, piezoelectric elements with various configurations were also utilized for pumping [2–7]. Every pump vacuums and discharges the fluids with volumetric change produced by the actuation of the piezoelectric element. Consequently, it is important for performance upgrade of fluid pumps to amplify the deflection of piezoelectric actuators. There are two approaches for improving performance of piezoelectric-actuated fluid pumps. One is to develop novel materials with higher piezoelectricity. It is well known that various materials such as quarts (SiO2) and zinc oxide (ZnO) provide piezoelectricity. Especially perovskite oxides expressed with a chemical formula ABO3 provide excellent piezoelectric performance, and they are represented by barium titanate (BaTiO3), lead titanate (PbTiO3), and lead zirconium titanate (PZT: Pb(Zr, Ti)O3) ceramics. The important feature of these ceramics is ferroelectricity. Namely, they have a spontaneous polarization caused by noncentrosymmetric crystal structure and can change its direction by external loads, which is commonly referred to as domain switching. In poling
Reduction of Structural Vibrations by Passive and Semiactively Controlled Friction Dampers  [PDF]
L. Gaul,J. Becker
Shock and Vibration , 2014, DOI: 10.1155/2014/870564
Abstract: Reduction of structural vibrations is of major interest in mechanical engineering for lowering sound emission of vibrating structures, improving accuracy of machines, and increasing structure durability. Besides optimization of the mechanical design or various types of passive damping treatments, active structural vibration control concepts are efficient means to reduce unwanted vibrations. In this contribution, two different semiactive control concepts for vibration reduction are proposed that adapt to the normal force of attached friction dampers. Thereby, semiactive control concepts generally possess the advantage over active control in that the closed loop is intrinsically stable and that less energy is required for the actuation than in active control. In the chosen experimental implementation, a piezoelectric stack actuator is used to apply adjustable normal forces between a structure and an attached friction damper. Simulation and experimental results of a benchmark structure with passive and semiactively controlled friction dampers are compared for stationary narrowband excitation. For simulations of the control performance, transient simulations must be employed to predict the achieved vibration damping. It is well known that transient simulation of systems with friction and normal contact requires excessive computational power due to the nonlinear constitutive laws and the high contact stiffnesses involved. However, commercial finite-element codes do not allow simulating feedback control in a general way. As a remedy, a special simulation framework is developed which allows efficiently modeling interfaces with friction and normal contact by appropriate constitutive laws which are implemented by contact elements in a finite-element model. Furthermore, special model reduction techniques using a substructuring approach are employed for faster simulation. 1. Introduction Semiactive control strategies for vibration reduction offer interesting alternatives to passive means of damping enhancement or fully active vibration control (AVC). Hereby, the term semiactive means that passive system properties, such as friction, material damping, or fluid viscosity, are actively controlled. This intrinsically eliminates the problem of system destabilization due to spillover effects encountered in AVC applied to flexible structures [1, 2]. Furthermore, semiactive control is more energy-efficient than fully active ones in general which is an important aspect from an application point of view. In exchange of these advantages, the achievable performance is limited
Test on an Optimized Cylindrical Non-contact Piezoelectric Actuator  [PDF]
Chen Heng, Chen Chao, Yang Dong, Wang Junshan, Ge Yuyu
- , 2017, DOI: 10.16356/j.1005-1120.2017.01.043
Abstract: An optimization design for the cylindrical non-contact piezoelectric actuator is presented after analyzing the acoustic radiation pressure and acoustic viscous force. By adding the specific microstructure on the rotor to alter the near-field sound effect and maximize the use of high intensity acoustic field induced by the stator to drive the rotor, the rotor speed is increased. The finite element analysis of the acoustic field induced by a variety of rotors with different structures is conducted, A prototype is manufactured, the speed-test system for the actuator is built, and the driving characteristics are measured. The results suggest that the rotation speed of the rotor can reach 4 167 r/min, which demonstrates that the driving characteristics of cylindrical non-contact piezoelectric actuator are successfully improved using the optimization method proposed.
Fabrication of Flexible Piezoelectric Fiber Composite Actuator by Arrangement-casting Method
LI Shi-Cheng, ZHU Kong-Jun, QIU Jin-Hao, PANG Xu-Ming
无机材料学报 , 2013, DOI: 10.3724/sp.j.1077.2013.12205
Abstract: The structure of piezoceramic fiber composite actuator was designed, consisting of interdigitated electrode plates, binder and piezoceramic fiber composite layer. The flexible, planar piezoceramic fiber composite actuators were prepared by arrangement-casting method. The electrical and mechanical properties of the PZN-PZT ceramics were tested. Piezoelectric properties of piezoceramic fiber composite were estimated by iso-strain mixing formulas. The strain properties of the actuator were tested using dynamic response system based on LabVIEW. The piezoelectric constant d33, Curie temperature Tc and elastic compliance coefficient s33 of the PZN-PZT ceramics are found to be 520 pC/N, 320 nd 20.5×10–12 m2/N, respectively. Theory of piezoelectric constants and of piezoceramic fiber composite are 509 and –156 pC/N, respectively. Test results show that the actuator is capable of producing large, directional in-plane strains. 100 parts-per-million longitudinal strain and 58 parts-per-million transverse strain were generated under a 300 V peak-to-peak applied voltage cycle. The stretching of the longitudinal and transverse directions are 3.6 μm and 1.7 μm, respectively, indicating the actuator has a high electromechanical property.
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