2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications最新文献_第4页

Static and dynamic analyses of a Functionally Graded Magnetoelectroelastic Circular Plate 功能梯度磁电弹性圆板的静、动态分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775781

Tian-chong Yu, G. Nie, Z. Zhong

{"title":"Static and dynamic analyses of a Functionally Graded Magnetoelectroelastic Circular Plate","authors":"Tian-chong Yu, G. Nie, Z. Zhong","doi":"10.1109/SPAWDA.2008.4775781","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775781","url":null,"abstract":"A semi-analytical method, which makes use of the state space method and the one-dimensional differential quadrature method, is used to obtain the static and dynamic responses of a functionally graded magnetoelectroelastic circular plate with the material property varying only in the thickness direction. The analytical solution in the thickness direction can be obtained by using the state space method and the approximate solution in the radial direction can be derived through using the one-dimensional differential quadrature method. Based on the elastic theory of magnetoelectroelastic materials and the assumption that the mechanical, electric and magnetic properties of the materials vary continuously along the thickness direction and have the same exponential distribution, differential equations of equilibrium in terms of displacements, electric potential and magnetic potential can be presented. Numerical results are given to demonstrate the accuracy and superiority of the presented method. Some regular characteristics about the reactions of the circular plate in piezoelectric and piezomagnetic materials can be obtained by examples and the results can be used in the design of the corresponding structures.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114721105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-objective shape optimization for piezoceramics 压电陶瓷的多目标形状优化

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775823

F. Wang, M. Dellnitz

引用次数: 0

Magnetoelectric response analysis of the piezoelectric/piezomagnetic thin-film heterostructure derived by low energy cluster beam deposition 低能簇束沉积压电/压磁薄膜异质结构的磁电响应分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775748

Shifeng Zhao, C. Yao, Meng-liang Yao, Yuewen Mu, J. Wan, Guang-hou Wang

引用次数: 2

Experiment research on multilayer piezoelectric transformer 多层压电变压器的实验研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775844

Xiangcheng Chu, Jun-fei Wu, Zhi-han Xu, Longtu Li

引用次数: 11

Preparation of lead free KNLNTS piezoelectric ceramics by molten salt synthesis and its application 熔盐法制备无铅KNLNTS压电陶瓷及其应用

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775843

Xiangcheng Chu, Jun-fei Wu, Longtu Li, Liang Zhong, Shifang Zhao

{"title":"Preparation of lead free KNLNTS piezoelectric ceramics by molten salt synthesis and its application","authors":"Xiangcheng Chu, Jun-fei Wu, Longtu Li, Liang Zhong, Shifang Zhao","doi":"10.1109/SPAWDA.2008.4775843","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775843","url":null,"abstract":"Lead-free (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3 (KNLNTS) piezoelectric ceramics were synthesized by the NaCl-KCl (NaCl/KCl=1/1) molten salt synthesis (MSS) method. The KNLNTS ceramics was fabricated successfully by sintering at 1100degC to 1200degC. The results show that the KNLNTS powder particle size increased form 50 nm to 200 nm and the shape changed from cubic structure to plated-like structure with time increasing. Compared to the solid mixed oxide (SMO) process, the MSS can get powders with (100) grain orientation and without aggregation in less time. The density of the KNLNTS ceramics sintered at 1150degC reached a maximum value of 4.69 g/cm3. The ceramics sintered at 1150 square by MSS method shows a maximum Piezoelectric coefficient of about 250 pC/N and a maximum electromechanical coupling factor kp of 37.6%. A novel rocking head type piezoelectric ultrasonic motor was fabricated using the lead-free ceramics as the actuator. The Doppler Laser Vibrometer (Polytec 300-F) was used to measure the vibration characteristic of the ultrasonic motor. The resonant frequency of first bending mode is about 129.6 kHz. The output torque was 32 uNm, and the maximum revolution speed was 330 rpm at 100 Vp-p driving voltage.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125777286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of a piezoelectric micro-pump by using ANSYS 基于ANSYS的压电微泵结构分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775812

Jiashan Xu, Tao Guo, Hong-ming Sun, Hang Guo

引用次数: 1

Reverberation-ray analysis of orthotropic piezoelectric laminates with imperfect interfaces 具有非完美界面的正交各向异性压电层合板的混响射线分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775745

Yun-ying Zhou, Wei-qiu Chen, Chao-feng Lu

引用次数: 0

Actuating characteristic of laminated PVDF actuators used on a beam with large deformation PVDF层压作动器在大变形梁上的作动特性

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775793

Ya-hong Zhang, S. Xie, Xi-nong Zhang

{"title":"Actuating characteristic of laminated PVDF actuators used on a beam with large deformation","authors":"Ya-hong Zhang, S. Xie, Xi-nong Zhang","doi":"10.1109/SPAWDA.2008.4775793","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775793","url":null,"abstract":"Actuating characteristic of laminated PVDF actuator (LPA) partially covered on a beam is studied in this paper. Considering large deformation of the beam, coupled dynamic equations of the system are derived based on Hamilton principle. The formulas of nonlinear actuating forces are obtained and the parametric study is then conducted to evaluate the effects of geometric and physical properties of the actuator on its actuating forces. For a cantilever beam, the influences of the deformation, LPA location and PVDF layer number are discussed. The results show that the nonlinear deformation has no effect on the axial actuating force, but it induces pronounced actuating force in the transverse direction. The nonlinear actuating force is inversely proportional to the radius of local curvature, and it is linear with the number of LPA's layers. The linear actuating force is the second-order polynomial function of the layer number. For a cantilever beam, the optimized location of the LPA is the fixed end for linear deformation. Whereas, the optimized position of the LPA is tip of the beam when large deformation occurred and the control force is afforded by nonlinear actuating force in the transverse direction.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122508650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Wave propagation in two-layered infinite composite piezoelectric hollow cylinder with imperfect interfaces 具有非完美界面的两层无限复合压电空心圆柱体中的波传播

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775799

Z. Bian, Wei-qiu Chen, Chao-feng Lu

引用次数: 2

A new type of ultrasonic gas flowmeter with multi-tracks 一种新型多径超声气体流量计

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775817

Y. Ben, Zhong-ning Zhang, Shu-Yi Zhang

{"title":"A new type of ultrasonic gas flowmeter with multi-tracks","authors":"Y. Ben, Zhong-ning Zhang, Shu-Yi Zhang","doi":"10.1109/SPAWDA.2008.4775817","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775817","url":null,"abstract":"In general, two major factors effect on the measurement precision of ultrasonic transit-time gas flowmeter: the calculations of gas velocity distribution in the pipe and the measurements of the transit time of ultrasonic transmitting from one transducer to another. In this paper, considering the affect factors, a new design of ultrasonic gas flow meter is proposed, which is operated by a master slave control based on a single board computer and a MCU. In order to calculate the velocity distribution in the whole pipe, the multi-tracks (5 tracks) are used to measure the transit times of ultrasonic waves between each pair of the corresponding transducers located at five different profiles of the pipe, by which the gas velocity near the pipe wall can be described more accurately, especially at a low gas velocity. Meanwhile, the ultrasonic beam deflection altered with the change of the gas velocity is modified by software in order to improve the accuracy of time interval. In addition, the peak value transmission circuit is employed to optimize the self-adaptive ability of the system, which can also raise the SNR and reduce the measurement error resulting from the ultrasonic beam deflection. At last, this work proposed a new algorithm for flow calculation based on the improvements mentioned above. These results show that the method has better accuracy, rangeability, stability and repeatability compared to traditional ones.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121390869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2