Vibration Analysis of Conical Shells by the Improved Fourier Expansion-Based Differential Quadrature Method

Table 2

Natural frequency parameters under different boundary conditions obtained by two types of weighting coefficients (, ).

	F-S	S-S	F-C
With auxiliary functions	0.1435	0.2234	0.8696
Without auxiliary functions	0.8442	0.8772	0.8403
Irie et al. [6]	0.1441	0.2233	0.8696