Department of Applied Mathematics;
Northwestern Polytechnical University;
Xi’an 710072;
China;
Ministry of Industry and Information Technology Key Laboratory of Dynamics and Control of Complex Systems;
Northwestern Polytechnical University;
Xi’an 710072;
China;
Department of Mechanical Engineering;
Northwestern Polytechnical University;
Xi’an 710072;
China;
School of Mechanical and Aerospace Engineering;
Oklahoma State University;
Oklahoma 74078;
U.S.A.;
functionally; graded; piezoelectric; material(FGPM); geometrical; nonlinearity; stability; analysis;