Semi-Analytical Solution Based on Strip Method for Buckling and Vibration of Isotropic Plate

Table 1

Convergence of the buckling forces 𝜆_cr=−(𝑁_𝑥𝑎²/𝐷𝜋²) of full simply supported rectangular isotropic plates under uni-axial load 𝑁_𝑥.

Critical buckling load 𝜆cr due to 𝑁, 𝛽
𝛽	𝑁=2	𝑁=3	𝑁=4	𝑁=5	𝑁=6	Exact [8]
1.0	3.9997	4.0000	4.0000	4.0000	4.0000	4
1.5	24.9971	24.9998	25.0000	25.0000	25.0000	25
2.0	10.5615	10.5624	10.5625	10.5625	10.5625	10.5625