Comparison of normalized central deflections, , of symmetric [0/90/0] plates and spherical panels under uniform load for different a/h ratios.

Table 3: Comparison of normalized central deflections, , of symmetric [0/90/0] plates and spherical panels under uniform load for different a/h ratios.

Normalized central moment, , of [0/90/0] panels under uniform load

a/h

R₁ = R₂

= ∞ (SS1) [100]

R₁ = R₂

= ∞ (SS3)

R₁ = R₂

= ∞ (SS4)

[100]

R₁/a = R₂/a

= 10 (SS1)

[101]

R₁/a = R₂/a

= 10 (SS3)

R₁/a = R₂/a

= 10 (SS4)

Comments

21.86693

21.867

(0)^*

21.867

(0)^*

21.75385

(0.5171) ǂ

21.716

(0.1740)^*

(0.6959) ǂ

20.225

(7.0280)^*

(7.5134) ǂ

Minor membrane action; no restraint effect

10.89951

10.899

(0)^*

10.899

(0)^*

10.79020

(1.002 ) ǂ

10.752

(0.3540)^*

(1.3700) ǂ

9.388

(12.9951)^*

(13.8774)ǂ

Moderate membrane action; no restraint effect

7.75964

7.759

(0)^*

7.759

(0)^*

7.54655

(2.7461)ǂ

7.471

(1.0011)^*

(3.800)ǂ

5.310

(29.6367)^*

(31.5869)ǂ

Reasonably high membrane action; no restraint effect

6.83805

6.838

(0)^*

6.838

(0)^*

5.92920

(13.2911 )ǂ

5.640

(4.8776)^*

(17.9789)ǂ

1.844

(68.8997)^*

(73.0490)ǂ

Very high membrane action; no restraint effect

100

6.70469

6.705

(0)^*

6.705

(0)^*

4.21164

(37.1836)ǂ

3.642

(13.5254)^*

(46.8757)ǂ

0.498

(88.1756)^*

(92.5798)ǂ

Very high membrane action; no restraint effect

% D i f f e r e n c e (E d g e Re s t r a int) = |\frac{S S x - S S 1}{S S 1}| 100, \begin{matrix} x = 3, 4; \end{matrix}

$% D i f f e r e n c e (C u r v a t u r e) = |\frac{S h e l l_{x} - P l a t e_{x}}{P l a t e_{x}}| 100, \begin{matrix} x = 1, 3, 4. \end{matrix}$