Nonlinear transient thermo-mechanical responses of porous graphene platelet-reinforced cylindrical panels under moving distributed loads

被引:25
作者
Zhang, Wei [1 ,2 ]
Ma, Huan [1 ]
Wang, Yibo [1 ]
Wang, Yuewu [1 ]
机构
[1] Beijing Univ Technol, Fac Mat & Mfg, Beijing Key Lab Nonlinear Vibrat & Strength Mech S, Beijing 100124, Peoples R China
[2] Guangxi Univ, Dept Mech, Nanning 530004, Guangxi, Peoples R China
基金
北京市自然科学基金; 中国国家自然科学基金;
关键词
Porous FG-GPLRC; Cylindrical panel; Thermal environment; Nonlinear dynamic response; Moving load; FUNCTIONALLY GRADED PLATES; FREE-VIBRATION; DYNAMIC-RESPONSE; BEHAVIOR; SHELLS; BEAM;
D O I
10.1016/j.tws.2023.111180
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper is the first attempt, to the best of the authors' knowledge, to explore the nonlinear temperature dependent dynamic responses of a porous functionally graded graphene nanoplatelet-reinforced composite (FG-GPLRC) cylindrical panel subjected to a moving distributed load. The desired porous FG-GPLRC structure can be achieved by reasonably designing the inner pore size and GPL dispersion patterns. A temperature dependent dynamic model is proposed by introducing the equivalent thermo-mechanical parameters of the porous FG-GPLRCs with the help of the Halpin-Tsai micromechanics model, extended rule of mixtures, and open cell metal foam model. The nonlinear governing equations of motion of nanocomposite cylindrical panels are derived based on the first-order shear deformation theory and the standard Lagrange equation with the aid of von K ' arm ' an geometric nonlinearity. Additionally, a closed-form Navier-type solution is implemented to model the simply-supported edges of the structures. Finally, the nonlinear dynamic response is determined using the Newmark direct integration technique combined with the Newton-Raphson iterative scheme. A parametric analysis is conducted, and the results indicate that the present model can predicate the temperature-dependent buckling behaviors and transient dynamic responses of the porous FG-GPLRC cylindrical panel. It is also found that dispersing more GPLs and fabricating more internal pores near the mid-surface of the panel can greatly reduce the response amplitudes induced by the moving loads, and the moving distributed load with a shorter length can result in a higher response.
引用
收藏
页数:12
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