Thermal postbuckling of shear deformable multiscale hybrid composite beams
Arameh Eyvazian,Chunwei Zhang,Mohammad Alkhedher,Murat Demiral,Afrasyab Khan,Tamer A. Sebaey
Abstract
This research is deal with thermal buckling and post-buckling of carbon nanotube/fiber/polymer composite beams. The beam is considered to be under uniform temperature rise. Firstly, the effective material properties of a two phase nanocomposite consisting of CNT and polymer are extracted. Then, the modified Chamis rule is utilized to obtain the equivalent thermo-mechanical properties of multiscale hybrid composite (MHC). Based on the first order shear deformation theory, Von-Karman type of geometrically nonlinear strain-deformation equations and also the virtual work rule, the equilibrium equations of a three phace composite beam are derived. Bifurcation buckling and also the thermal post-buckling is analysed using the generalized differential quadrature technique. In the thermal buckling phenomena, a linear eigenvalue problem is solved; however, due to the nonlinearity, the thermal postbuckling study is performed using an iterative displacement control strategy. After validation study, several novel results demonstrate the influences of length-to-thickness ratio, agglomeration of applied CNTs and fibers in the composite media and number and orientation of layers on the critical temperature and displacement loading path.
Key Words
MHC beam; nonlinear thermal stability; GDQM; displacement control strategy
Address
(1) Arameh Eyvazian, Chunwei Zhang — Structural Vibration Control Group, Qingdao University of Technology, Qingdao 266033, China
(2) Arameh Eyvazian — Department of Mechanical Engineering, Politecnico di Milano (Technical University), Via La Masa 1, 20156 Milan, Italy
(3) Mohammad Alkhedher — Mechanical Engineering Department, Abu Dhabi University, Abu Dhabi 59911, UAE
(4) Murat Demiral — College of Engineering and Technology, American University of the Middle East, Kuwait
(5) Afrasyab Khan — Institude of Engineering and Technology, Department of Hydraulics and Hydraulic and Pneumatic Systems, South Ural State University, Lenin Prospect 76, Chelyabinsk, 454080, Russian Federation
(6) Tamer A. Sebaey — Engineering Management Department, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia
(7) Tamer A. Sebaey — Mechanical Design and Production Department, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Sharkia, Egypt.
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