Analysis of porosity influence on the effective moduli of ceramic matrix PZT composite using the simplified finite element model  

作　　者：Anna Kudimova Andrey Nasedkin 

机构地区：[1]Institute of Mathematics,Mechanics&Computer Science Southern Federal University,Miltchakova str.,8a,Rostov on Don 344090,Russia

出　　处：《Journal of Advanced Dielectrics》2019年第6期1-9,共9页先进电介质学报（英文）

基　　金：Project No.9.1001.2017/4.6 of the competitive part of the state task of the Ministry of Science and Higher Education of Russia.

摘　　要：The problem of determining the effective moduli of a ceramic matrix piezocomposite with respect to multiscale porosity was considered.To solve the homogenization problem,the method of effective moduli in the standard formulation,the finite element method and the ANSYS computational package were used.Various models of two-phase and three-phase composites consisting of a piezoceramic matrix,elastic inclusions of corundum and pores of various sizes have been investigated.Finite element models of representative volumes of 3–0 and 3–0–0 connectivities were developed.The results of computational experiments showed that effective moduli depend quite significantly not only on the volume fractions of inclusions and pores,but also on the structure and size of pores in comparison with the characteristic sizes of inclusions.

关 键 词：PIEZOELECTRICITY three-phase piezocomposite granular inclusion effective modulus representative volume finite element method 

分 类 号：TB3[一般工业技术—材料科学与工程]