摘要
通过理论分析和数值模拟验证了三角形压电复合悬臂梁的等强度假设,并推导了三角形压电复合悬臂梁准静态电压输出理论表达式。采用ANSYS 11.0对三角形压电复合悬臂梁的模态特性进行了分析,确定了层合厚度比对其固有频率的影响规律,对比了采用不同基底材料的压电梁电压输出理论值和模拟值。理论和模拟结果表明三角型压电复合悬臂梁在最优层合厚度比下的最大电压输出约为5V,其谐振频率约为62Hz。
The theoretical equations for voltage output of the triangle composite piezoelectric cantilever is deduced in view of shear strain, and the equi-strength hypothesis is verified by theoretical analysis and numerical simulation. The modal characteristics of triangle composite piezoelectric cantilever is analyzed by ANSYS to determine the influence pattern of the ratio of laminated thickness on the intrinsic frequency. The theoretical and simulation values of the voltage output have been compared after deducing the theoretical equations for voltage output of the triangle composite piezoelectric cantilever and the conclusion is that the maximum voltage output is around 5 V at its natural frequency of around 62 Hz under the most appropriate thickness ratio..
出处
《压电与声光》
CSCD
北大核心
2012年第4期545-548,552,共5页
Piezoelectrics & Acoustooptics
关键词
压电悬臂梁
压电孚能器
模态分析
等强度悬臂梁
有限元分析
piezoelectric cantilever
piezoelectric energy harvester
modal analysis
equal-strength cantilever
finite element method
