摘要
利用压电振子采集环境中振动能量的研究中发现粘结层厚度对压电振子的抗剪强度及发电性能均有较大影响。因此文中以变截面形状悬臂梁叠层压电振子为对象,利用ANSYS有限元分析软件仿真模拟了其粘结层厚度改变时对其抗剪性能、低频振动能量转换效率的影响。研究结果表明：随着粘结层厚度的增加,叠层结构中粘结层的抗剪强度有所提高,但对环境中的低频振动响应却减弱。综合分析表明,当变截面压电振子自由端尺寸为12 mm（约为矩形截面尺寸的85%）,且粘结层厚度控制在约为基底层厚度的1/4~1/5时,叠层压电振子的能量转换效率及抗剪强度最理想。
The thickness of adhesive layer had great influence on the generating capacity and the shearing capacity of laminated piezoelectric vibrator during the research by using piezoelectric vibrator to collect vibration energy from environment. In this paper, the analysis models were established to simulate the influence from the different thicknesses of the adhesive layer with variable cross-section for the output voltage and energy conversion efficiency by using ANSYS software. The research results showed that the shearing strength of the adhesive layer has improved, but less of low-frequency vibration response to environment with the increase of the layer thickness. The energy conversion efficiency and the shearing capacity seem to be ideal when the variable cross-section free end size is 12 mm（ about 85% of the rectangular section size） and the thickness of adhesive layer is 1/4 - 1/5 of the thickness of basal layer.
出处
《西安科技大学学报》
CAS
北大核心
2016年第1期139-143,共5页
Journal of Xi’an University of Science and Technology
基金
国家自然科学基金(50907042)
关键词
变截面叠层压电振子
抗剪强度
发电性能
能量转换效率
variable cross-section of laminated piezoelectric vibrator
shearing capacity
generating capacity
energy conversion efficiency
