Postbuckling of nanotube-reinforced composite cylindrical shells under combined axial and radial mechanical loads in thermal environment |
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| Affiliation: | 1. Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of China;2. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of China;3. School of Computing, Engineering and Mathematics, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797, Australia;1. CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, PR China;2. Department of Civil and Architectural Engineering, City University of Hong Kong, Kowloon, Hong Kong;3. College of Information Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, PR China;4. City University of Hong Kong Shenzhen Research Institute Building, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, PR China;1. College of Information Technology, Shanghai Ocean University, Shanghai 201306, China;2. Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region;3. School of Sciences, Nanjing University of Science and Technology, Nanjing 210094, China;4. City University of Hong Kong Shenzhen Research Institute Building, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China;1. College of Information Technology, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai 201306, PR China;2. Department of Civil and Architectural Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region;3. CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, PR China;4. City University of Hong Kong Shenzhen Research Institute Building, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, PR China;1. Department of Mechanical Engineering, University of Guilan, P.O. Box 3756, Rasht, Iran;2. Department of Mechanical Engineering, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran |
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| Abstract: | A postbuckling analysis is presented for nanocomposite cylindrical shells reinforced by single-walled carbon nanotubes (SWCNTs) subjected to combined axial and radial mechanical loads in thermal environment. Two types of carbon nanotube-reinforced composite (CNTRC) shells, namely, uniformly distributed (UD) and functionally graded (FG) reinforcements, are considered. The material properties of FG-CNTRCs are assumed to be graded in the thickness direction, and are estimated through a micromechanical model. The governing equations are based on a higher order shear deformation shell theory with a von Kármán-type of kinematic nonlinearity. The thermal effects are also included and the material properties of CNTRCs are assumed to be temperature-dependent. A boundary layer theory and associated singular perturbation technique are employed to determine the buckling loads and postbuckling equilibrium paths. The numerical illustrations concern the postbuckling behavior of perfect and imperfect, FG-CNTRC cylindrical shells under combined action of external pressure and axial compression for different values of load-proportional parameters. The results for UD-CNTRC shell, which is a special case in the present study, are compared with those of the FG-CNTRC shell. |
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| Keywords: | A Nano-structures B Buckling C Analytical modeling Functionally graded materials |
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