Dynamic Resonance of Curved Panels in Adverse Hygrothermal Environment

Table 2

Convergence of nondimensional critical load for s-s-s-s four-layered laminated composite plates for two different lamination sequences at 0.1% moisture concentration.

Mess division	Nondimensional critical load at 0.1% moisture concentration
	0/90/90/0	45/−45/−45/45
4 × 4	0.6095	0.7255
6 × 6	0.6079	0.7041
8 × 8	0.6078	0.7003
10 × 10	0.6078	0.7003

𝑎/𝑏=1; and 𝑎/𝑡=100 at 𝑇=300°K; 𝐸₁=130 Gpa; 𝐸₂=9.5 Gpa; 𝐺₁₂=6 Gpa; 𝐺₁₃=𝐺₁₂; 𝐺₂₃=0.5𝐺₁₂; 𝜈₁₂=0.3; 𝛽₁=0; 𝛽₂=0.44.
Critical load: 𝜆=𝑁_xcr/(𝑁_xcr)_C=0%or 𝑇=300°K.