Load transfer of graphene/carbon nanotube/polyethylene hybrid nanocomposite by molecular dynamics simulation |
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| Affiliation: | 1. Institute of Structural Mechanics, Bauhaus-University Weimar, Marienstr. 15, D-99423 Weimar, Germany;2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;3. DST/NRF Centre of Excellence in Strong Materials and RP/Composites Facility, School of Mechanical, Industrial and Aeronautical Engineering, University of the Witwatersrand, Johannesburg, South Africa;4. University of Tunis El Manar, ENIT, 1002 Tunis, Tunisia;5. FEMTO-ST Institute, Department of Applied Mechanics, UMR6174, CNRS/UFC/ENSMM/UTBM, F25000 Besancon, France;6. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China;7. School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea;8. University of Lyon, CNRS, INSA-Lyon, LaMCoS, UMR5259, F69621, Villeurbanne Cedex, France;1. Center for Simulation, Visualization and Realtime Prediction (SiViRt), The University of Texas at San Antonio, San Antonio, TX 78249, United States;2. Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, United States;1. Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, 16846-13114 Tehran, Iran;2. School of Chemical Engineering, Shandong University of Technology, 255049 Zibo, Shandong, PR China;1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;2. Department of Engineering Mechanics, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China;3. College of Aerospace Engineering, Chongqing University, Chongqing 400044, China;4. Department of Mechanical Engineering, Chiba University, Chiba City 263-8522, Japan;5. Department of Nanomechanics, Tohoku University, Sendai 980-8579, Japan |
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| Abstract: | Load transfer of the graphene/carbon nanotube (CNT)/polyethylene hybrid nanocomposite is studied here from molecular dynamics (MD) simulations. Simulations of this composite material under uniaxial tension were conducted by varying CNT’s position and diameter in the polymer matrix. The obtained results show that: (1) The peak strength of stress and strain evolution in the polymer matrix is lower than the peak strength of the graphene/graphene and graphene/polymer interfaces. Hence, the damage zone is always located in the polymer matrix. (2) Agglomerated two-layer graphenes do not possess an increased value in the peak strength compared with single-layer graphene-reinforced polymer nanocomposite (PNC), while two separate layers of graphene show slightly higher peak strength. (3) The largest peak strength is observed before CNT moves to the center of the polymer matrix. The damage location moves from the upper to the lower part of CNT when the CNT is located at the centre of polymer matrix. (4) The influence of the CNT diameter on the peak strength is not obvious, while the damage location and shape in the polymer matrix changes with respect to varying CNT diameters. In addition, the damage zone always falls outside the interphase zone. |
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| Keywords: | A Hybrid A Polymer–matrix composites (PMCs) B Interface/interphase B Debonding Molecular dynamics simulation |
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