Mechanical Behaviors of Carbon Nanotubes

Figure 6.6 Relative errors between the critical axial loads obtained from Eqs. (6.38) and (6.39) for various outer tube radii of the DWCNT [22].

6.4.8 Buckling of MWCNTs

Based on the proposed vdW interaction model, the buckling loads for MWCNTs with 2, 5, 10, and 17 layers have been calculated and are presented in Fig. 6.7(A–D). For all of the considered MWCNTs in Fig. 6.7(A–D), the innermost radius R_I=11.9 nm. Fig. 6.7(A–D) show the relationship between the buckling loads and the wavenumbers (m, n). The effect of vdW interaction on the buckling loads is examined by comparing the buckling loads with (curves with solid line) and without (curves ...