Free Vibration Analysis of DWCNTs Using CDM and Rayleigh-Schmidt Based on Nonlocal Euler-Bernoulli Beam Theory

Table 7

Numerical results for sliding end-simply supported DWCNTs: in columns 1 and 3, the first two dimensionless fundamental frequencies 𝜆₁ and 𝜆₂, with 𝑐₁₂=0, are reported, while in column 2, the first frequency 𝜆, with 𝑐₁₂=0.0694 TPa, is listed.

𝜂0	𝜆1	𝜆	𝜆2
0	2.467	3.940	4.506
0.1	2.438	3.892	4.452
0.2	2.354	3.759	4.299
0.3	2.232	3.564	4.077
0.4	2.090	3.336	3.816
0.5	1.941	3.099	3.545