Table 9: FEA convergence of the central deflection (mm) of a thick moderately deep (R/a = 10) isotropic square (a = b = 1 m) saddle shaped simply supported (SS4) panel under uniform load (q0 = 100 MPa).

Number of Elements

FEA (ABAQUS) (mm)

Present (mm)

RD %

4

63.00

9.328

575.39

200

11.66

9.328

25

800

10

9.328

7.2

1600

9.689

9.328

3.87

3125

9.479

9.328

1.62

12000

9.268

9.328

0.64

25000

9.268

9.328

0.64