Page 251 - Pressure Vessel Design Manual

Special Designs 229

Table 4-8
Flat Plate Coefficients
Equations
Case 1: One short edge free, three edges simply
supported, uniformly decreasing load to the
free edge

a/b a Lp
0.25 1 1.5
Coefficient
-
0.05 0.2 0.28
2 ,z-tT
.El 0.013 0.026 0.033 0.04 -
0.05
db
4
Coefficient 3.5 -
El 0.32 0.35 I 0.36 0.37 0.37
El 0.058 0.064 0.067 0.069 0.07 From Ref. 12. Section 6.5-4. Case 4d.

a L
Case 2: All edges simply supported, uniform
1
decreasing load
0.25 I 0.5 I 0.75 1 1.5 I
- 1
1
Coefficient

Coefficient
I I I I I
I 0.32 I 0.35 I 0.37 I 0.38 I 0.38
I 0.056 1 0.063 1 0.067 0.069 I 0.07 I
1
I- I I I I I I From Ref. 12, Section 6.5-4, Case 4c.

Case 3 All edges simply supported, uniform load

B3pb2,
a/b 2 l (Th = - mb
1 1.25 1.5 1.75 t2 b
Coefficient
El 0.287 0.376 0.452 6 = Y@ ($)
El 0.0443 0.0616 0.077

ah
2.5 3 4 Infinity
Coefficient e Assume p as a uniform load at center of plate.
-H
I 0.65 0.713 0.741 e A,>b,
0.14 0.1416 0.1422 From Ref. 12, Section 6.5-4, Case 4a.