TY - JOUR ID - 35884 TI - On the Mechanical Properties of Chiral Carbon Nanotubes JO - Journal of Ultrafine Grained and Nanostructured Materials JA - JUFGNSM LA - en SN - 2423-6845 AU - Zakeri, Mahnaz AU - Shayanmehr, Mahdi AD - Aerospace Engineering Department, K. N. Toosi University of Technology, Tehran, 16569-83911, Iran. Tel.: +98-21-73064217; fax: +98-21-77791045 Y1 - 2013 PY - 2013 VL - 46 IS - 1 SP - 1 EP - 9 KW - Carbon Nanotube KW - Chirality KW - Tensile Rigidity KW - Bending Rigidity KW - Torsional Rigidity DO - 10.7508/jufgnsm.2013.01.001 N2 - Carbon nanotubes (CNTs) are specific structures with valuable characteristics. In general, the structure of each nanotube is defined by a unique chiral vector. In this paper, different structures of short single-walled CNTs are simulated and their mechanical properties are determined using finite element method. For this aim, a simple algorithm is presented which is able to model the geometry of single-walled CNTs with any desired structure based on nano-scale continuum mechanics approach. By changing the chiral angle from 0 to 30 degree for constant length to radius ratio, the effect of nanotube chirality on its mechanical properties is evaluated. It is observed that the tensile modulus of CNTs changes between 0.93-1.02 TPa for different structures, and it can be higher for chiral structures than zigzag and armchair ones. Also, for different chiral angles, the bending modulus changes between 0.76-0.82 TPa, while the torsional modulus varies in the range of 0.283-0.301TPa. UR - https://jufgnsm.ut.ac.ir/article_35884.html L1 - https://jufgnsm.ut.ac.ir/article_35884_6a9dee19dc995ef143d875cccc979f98.pdf ER -