Nonlinear dynamic analysis of functionally graded carbon nanotube-reinforced composite plates using MISQ20 element  

作　　者：Quoc-Hoa PHAM Trung Thanh TRAN Phu-Cuong NGUYEN 

机构地区：[1]Advanced Structural Engineering Laboratory,Department of Structural Engineering,Faculty of Civil Engineering,Ho Chi Minh City Open University,Ho Chi Minh City 700000,Vietnam [2]Faculty of Mechanical Engineering,Le Quy Don Technical University,Hanoi 100000,Vietnam

出　　处：《Frontiers of Structural and Civil Engineering》2023年第7期1072-1085,共14页结构与土木工程前沿（英文版）

摘　　要：The main objective of this study is to further extend the mixed integration smoothed quadrilateral element with 20 unknowns of displacement(MISQ20)to investigate the nonlinear dynamic responses of functionally graded carbon nanotube-reinforced composite(FG-CNTRC)plates with four types of carbon nanotube distributions.The smooth finite element method is used to enhance the accuracy of the Q4 element and avoid shear locking without using any shear correction factors.This method yields accurate results even if the element exhibits a concave quadrilateral shape and reduces the error when the element meshing is rough.Additionally,the element stiffness matrix is established by integrating the boundary of the smoothing domains.The motion equation of the FG-CNTRC plates is solved by adapting the Newmark method combined with the Newton–Raphson algorithm.Subsequently,the calculation program is coded in the MATLAB software and verified by comparing it with other published solutions.Finally,the effects of the input parameters on the nonlinear vibration of the plates are investigated.

关 键 词：carbon nanotube MISQ20 FG-CNTRC plate nonlinear vibration nonlinear dynamic analysis SFEM 

分 类 号：O17[理学—数学]