Shock and Vibration / 2015 / Article / Tab 4

Research Article

Vibration and Stability of Variable Cross Section Thin-Walled Composite Shafts with Transverse Shear

Table 4

Effect of mode number on the first natural frequencies ([θ/−θ]3, Ω = 0 rad/s).

TR = 0 TR = 1TR = 2
20°60°20°60°20°60°

2
 Kim159.74125.0735.34213.77168.1247.31279.68222.6263.31
 Present158.76125.8536.29209.63168.4748.10269.77222.8064.33
3
 Kim159.48124.2834.93213.63167.3046.92278.54219.0261.54
 Present158.50125.4535.14209.38168.0447.09268.32219.1461.97
4
 Kim159.29124.1234.86213.44167.1046.87278.39218.7961.36
 Present158.29125.2935.02209.07167.99 46.99267.99219.0261.59
5
 Kim159.25124.0634.82213.43167.0746.85278.37218.5561.27
 Present158.24125.2534.96209.03167.9746.99267.86218.8961.46