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

Stress analysis of a functional gradient material plate with a circular hole under symmetric loads 带圆孔功能梯度材料板在对称荷载作用下的应力分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775851

Wen-tao Chen, C. Gao, Quanquan Yang

{"title":"Stress analysis of a functional gradient material plate with a circular hole under symmetric loads","authors":"Wen-tao Chen, C. Gao, Quanquan Yang","doi":"10.1109/SPAWDA.2008.4775851","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775851","url":null,"abstract":"This paper is to study the stress distribution of a functional gradient material plate with a circular hole under symmetric load. With using the method of homogenized layer and neglecting the thermal effects on the structure, the solution for the stress distribution of the functional gradient material plate having radial arbitrary elastic modulus is derived based on the known results of a single thick layer cylinder structure, and the continuous conditions of stress and displacement along the interfaces. When the number of the layer N rarr infin, one can obtain an exact solution. But, since the N is taken as a finite number in general cases, so only an approximate solution can be presented. As an example, a functional gradient material plate with different radial elastic modulus is selected for numerical calculation. It is shown that the stress is greatly reduced as the radial elastic modulus increased, and moreover the stress level varies when the radial elastic modulus increased in different ways. Thus, it can be concluded that the stress around the circular hole in the functional gradient material plate can be effectively reduced by choosing the proper change ways of the radial elastic modulus.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"52 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":"134181756","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: 1

Three-dimensional analysis of functionally graded piezothemoelastic annular plate 功能梯度压热弹性环形板的三维分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775794

Guan-shi Li, Z. Zhong, G. Nie

引用次数: 3

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

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

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

Theoretical analyses of non-contact linear motors driven by surface acoustic waves 表面声波驱动非接触式直线电机的理论分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775824

Huan-huan Gu, Di Ma, Shu-Yi Zhang, Li-ping Cheng, X. Shui

引用次数: 2

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

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

Study on polarization state in depolarized fiber optic gyroscope 去偏振光纤陀螺仪偏振态的研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775743

Lihui Wang, Feng Sun, Q. Yu, Gang Liu

{"title":"Study on polarization state in depolarized fiber optic gyroscope","authors":"Lihui Wang, Feng Sun, Q. Yu, Gang Liu","doi":"10.1109/SPAWDA.2008.4775743","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775743","url":null,"abstract":"The instability of polarization state in interference fiber optic gyroscope (FOG) restricts the precision and stability of FOG. There are two methods to increase FOG's precision and stability, that is, to maintain or eliminate the state of polarization in fiber. Using Lyot fiber depolarizer not only reduces the effects of the states of polarization on the performance of FOG, but decreases the cost of FOG to a large extent, which is quite suit for the medium and low precision FOG. This article analyzes the principle of Lyot fiber depolarizer and the interchangeable character of input and output ports, deduces the structural parameters of Lyot fiber depolarizer and discusses the effects of parameters on the depolarizer's performance with Jones matrix. What's more, polarization transformation and polarization errors in depolarized fiber optic gyroscope (DFOG) are discussed in detail. Experimental result shows that the depolarizer we designed is very effective to reduce the drift of FOG, and depolarized fiber optic gyroscope is suit for fields using medium precision FOG. The analysis provides academic guidance to depolarizer used in depolarized fiber gyroscope or other fiber optic sensors.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"22 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":"127335858","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