سال انتشار: ۱۳۹۰

محل انتشار: نوزدهمین همایش سالانه مهندسی مکانیک

تعداد صفحات: ۴

نویسنده(ها):

Ali Lashkari Zadeh – Master of science, Department of Mechanical Engineering, Shahrood University of Technology
Mahmoud Shariati – Associate professor, Department of Mechanical Engineering, Shahrood University of Technology
Hamid Torabi – Master of science, Department of Mechanical Engineering, Shahrood University of Technology;

چکیده:

A structural mechanics model is employed for the investigation of the buckling behavior of CNT bundles of three SWCNTs in the CAE space of ABAQUS. To evaluate the buckling loads of carbon nanotube bundles, the effects of van-der Waals forces are further modeled using a nonlinear spring element. The effects of different types of boundary conditions (Fixed–Fixed, Simple–Simple and Fixed-Free) are studied for armchair nanotubes with various aspect ratios (length/diameter). The structural mechanics simulations reveal that CNT bundles comprising longer SWCNTs will exhibit lower critical buckling load. Results indicate that for Fixed- Free boundary condition the rate of critical buckling load’s reduction is highest and lowest critical buckling load occurs. In addition, the average buckling load of each SWCNT was computed and compared with buckling loads for individual SWCNTs.