Research Article

Free Vibration Exploration of Rotating FGM Porosity Beams under Axial Load considering the Initial Geometrical Imperfection

Table 5

The dependence of the first nondimensional frequency of the FGM beam on the axial compressive load and the volume fraction index n, L/h = 20,  = 5,  = 0.2, and r/L = 1.

BCN
00.512510

S-S00.34260.29510.26340.24590.25400.2626
0.20.33770.28850.25540.23640.24370.2522
0.40.33280.28180.24710.22640.23300.2414
0.60.32770.27490.23850.21600.22170.2299
0.80.32260.26790.22960.20500.20980.2179
C-C00.66720.56970.50860.45040.42040.4160
0.20.66410.56560.50360.44440.41330.4086
0.40.66100.56150.49860.43820.40610.4011
0.60.65790.55730.49360.43200.39880.3934
0.80.65480.55310.48850.42560.39130.3855