Macro fiber composite-based active control of nonlinear forced vibration of functionally graded plate  

作　　者：Peiliang ZHANG Jianfei WANG 

机构地区：[1]Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures,Beijing University of Technology,Beijing 100124,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2025年第5期869-884,共16页应用数学和力学(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12072003 and 12372003);Beijing Natural Science Foundation of China(No.1222001)。

摘　　要：Owing to their high flexibility and directional actuation capabilities,macro fiber composites(MFCs)have attracted significant attention for the active control of structures,especially in the nonlinear vibration suppression applications for large-scale flexible structures.In this paper,an MFC-based self-feedback system is introduced for the active control of geometrically nonlinear steady-state forced vibrations in functionally graded carbon nanotube reinforced composite(FG-CNTRC)plates subject to transverse mechanical loads.Based on the first-order shear deformation theory and the von Kármán nonlinear strain-displacement relationship,the nonlinear vibration control equations of the plate with MFC sensor and actuator layers are derived by Hamilton's principle.These equations are discretized by the finite element method(FEM),and solved by the Newton-Raphson and direct iterative methods.A velocity feedback control algorithm is introduced,and the effects of the control gain and the MFC actuator position on the nonlinear vibration active control effectiveness are analyzed.Additionally,a nonlinear resonance analysis is carried out,considering the effects of carbon nanotube(CNT)volume fraction and distribution type.The results indicate that the intrinsic characteristics of the structures significantly influence the vibration behavior.Furthermore,the appropriate selections of control gain and MFC position are crucial for the effective active control of the structures.The present work provides a promising route of the active and efficient nonlinear vibration suppression for various thin-walled structures.

关 键 词：macro fiber composite(MFC) nonlinear reson 

分 类 号：O322[理学—一般力学与力学基础]