Radial mechanical properties of single-walled carbon nanotubes using modified molecular structure mechanics

Crystal size and direction dependence of the elastic properties of Cu3Sn through molecular dynamics simulation and nanoindentation testing

“…A strong dependence can be observed between the elastic properties and the dimension of the polycrystalline aggregates, in which an increasing dimension would lead to a significantly decreasing polycrystalline Young's modulus, bulk modulus, and shear modulus but a slightly increasing Poisson's ratio. These results conform to the published data [21,51,52]. These polycrystalline elastic properties would eventually converge to a constant value as N becomes roughly larger than 7, where it is about 132.7 GPa for the Young's modulus, 128.9 GPa for the bulk modulus, 49.9 GPa for the shear modulus and 0.328 for the Poisson's ratio.…”

Mechanical and Electrical Properties of Single-walled Carbon Nanotubes Synthesized by Chemical Vapor Deposition

“…As the diameter of the nanotubes increases from 0.92 to 1.91 nm, the measured E radial decreases from 57 to 9 GPa. Figure 20 shows the comparison of the E radial of SWCNTs with different radius from this experiment, the reported nanoindentation result [22], and the reported computational result [87]. The E radial distribution with the tube radius for seven The measurements of large diameter SWCNTs (diameter close to 2 nm) in our study are in agreement with Barboza's data and modeling [84].…”

Electromechanical behavior, end enhancements and radial elasticity of single-walled CNTs: A physically-consistent model based on nonlocal charges

“…Similar values of the radial modulus were computed by means of a molecular mechanics approach in Chen et al (2010) for single-walled CNTs having Young moduli in the range 0.95-1.05 TPa. Namely, for zigzag CNTs with radius 0.39-2.35 nm, C r was computed in the range 62-0.4 GPa, while for CNTs with R in the range 0.48-2.38 nm, C r was found to vary to the range 30-0.3 GPa.…”