Research Article

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

Table 2

The first nondimensional frequency of the FGM beam depends on the porosity parameter .

L/hn = 0.2n = 0.5n = 1.0
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051.88231.88921.73921.74161.58441.5820
101.08841.08960.99921.00220.90560.9109
200.56910.56930.52130.52170.47160.4724
0.251.92051.92721.74021.73951.52101.5129
101.10921.11050.99560.99890.86060.8661
200.57970.57990.51860.51920.44650.4477