傾斜機能性マルチフェロイック複合薄板の応力振動解析

抄録

This study deals with a one-dimensional dynamic elastic problem in a functionally graded thin plate composed of piezoelectric and magnetostrictive materials. The top surface of the thin plate is considered to be fixed to a flat rigid body. All response quantities are taken to be initially zero. It is then assumed that the thin plate is subjected to impact pressure on the bottom surface and a magnetic potential difference between the top and bottom surfaces. The material properties are assumed to vary in the thickness direction according to a power low distribution. The elastic constitutive equation and the equation of motion are solved numerically by employing the method of characteristics and then the particle velocity and stress are obtained, when the materials at the top and bottom surfaces of the thin plate are taken to be CoFe O₂ and BaTiO₃ , respectively. Finally, the time history of the dynamic stress is illustrated graphically.