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研究了具有压电正交异性特性的片状压电复合材料及其压电正交异性复合材料 (Ortho tropicPiezoelectricCompositeMaterials ,简称OPCM )驱动元件的构造机理、性能 压电正交异性复合材料在相互垂直的两主方向上呈现出明显的压电特性差异 ,作为驱动片 ,片状压电正交异性复合材料在相互垂直的两主方向表现出相反的变形 ,该特性符合一般工程材料的变形规律 它在对结构的形状和位移控制以及在自适应结构中作为驱动元件较之常规的压电驱动材料有其独特的优点 实测表明 :OPCM驱动元件的纵向诱导应变是PZT驱动元件的 1.2 8倍 ,OPCM驱动元件的纵向诱导应变是其横向诱导应变的 1.30倍 ,且方向相反 ,显示出压电正交异性复合材料驱动元件产生横向负向诱导应变的优越效能
The mechanism of piezoelectric elements with piezoelectricity orthotropic properties and the driving mechanism of piezoelectricity orthotropic composite materials (OMRs) were investigated. The properties of the piezoelectric orthotropic composite materials perpendicular to each other The two main directions show obvious difference in piezoelectric characteristics. As a driving piece, the piezoelectric composite materials in sheet form show opposite deformations in the two main directions perpendicular to each other, which is consistent with the deformation law of common engineering materials. The control of the shape and displacement of the structure and its unique advantages as a driving element in the adaptive structure as compared with the conventional piezoelectric driving material show that the longitudinal induced strain of the OPCM driving element is 1.2 8 times that of the PZT driving element and the OPCM driving The longitudinal induced strain of the element is 1.30 times its transverse induced strain, and in the opposite direction, showing the superior performance of the piezoelectric orthotropic composite driving element in generating the transverse negative induced strain