Dynamic behaviors of graphene platelets-reinforced metal foam piezoelectric beams with velocity feedback control  

作　　者：Jie CHEN Xinyue ZHANG Mingyang FAN 

机构地区：[1]School of Mathematics,Statistics and Mechanics,Beijing University of Technology,Beijing 100124,China [2]College of Mechanical&Energy Engineering,Beijing University of Technology,Beijing 100124,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2025年第1期63-80,共18页应用数学和力学(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12102015 and 12472003);the R&D Program of Beijing Municipal Education Commission of China(No.KM202110005030)。

摘　　要：Graphene platelets(GPLs)-reinforced metal foam structures enhance the mechanical properties while maintaining the lightweight characteristics of metal foams.Further bonding piezoelectric actuator and sensor layers on the surfaces of GPLs-reinforced metal foam beams enables active vibration control,greatly expanding their applications in the aerospace industry.For the first time,this paper investigates the vibration characteristics and active vibration control of GPLs-reinforced metal foam beams with surfacebonded piezoelectric layers.The constant velocity feedback scheme is used to design the closed-loop controller including piezoelectric actuators and sensors.The effects of the GPLs on the linear and nonlinear free vibrations of the beams are numerically studied.The Newmark-βmethod combined with Newton's iteration technique is used to calculate the nonlinear responses of the beams under different load forms including harmonic loads,impact loads,and moving loads.Additionally,special attention is given to the vibration reduction performance of the velocity feedback control on the responses of the beam.

关 键 词：active vibration control piezoelectric material velocity feedback control metal foam nonlinear free vibration 

分 类 号：O341[理学—固体力学]