压电选针片性能分析与比较  

Analysis and Comparison of Performance of Piezoelectric Knitted-selecting Element

作　　者：刘振华[1] 李瑞峰[1] 徐莉萍[1] 

机构地区：[1]中国电子科技集团公司第26研究所,重庆400060

出　　处：《压电与声光》2014年第2期164-166,共3页Piezoelectrics & Acoustooptics

摘　　要：分析了压电选针片偏转位移和锁紧力间的关系。通过有限元软件计算力和位移随厚度比a的变化关系,并对比碳纤维、钢、铝3种材料作为基板的性能差异。结果表明,偏转位移随a逐渐减小,锁紧力随a逐渐增大。当a<0.8时,钢的性能优于碳纤维和铝,当a>1后,钢的性能呈下降趋势,而铝的性能增加。碳纤维材料作为基板时选针片的综合性能更稳定。The relationship between the deflection displacement and blocking force of piezoelectric knitted-selec- ting element is analyzed, the relation between the force and displacement with inactive layer thickness ratio is calcu- lated with the finite element software, and the performance differences by using carbon fiber.steel and aluminum as the inactive layers are compared. The results show that the deflection displacement is decreased gradually with the thickness ratio, while the blocking force is gradually increased with the thickness ratio. When the ratio is less than 0.8, the performance of steel is better than that of carbon fiber and aluminum; when the ratio is greater than 1, the performance of the steel is decreased, and the performance＂ of aluminum is increased. The comprehensive perform- ance of the knitted-selecting element is more stable when the carbon fiber is selected as the inactive layer.

关 键 词：偏转位移 锁紧力 选针片 有限元 基板 

分 类 号：TM282[一般工业技术—材料科学与工程] TN384[电气工程—电工理论与新技术]