Page 382 - MORPHOLOGIE DES STRUCTURES

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382 LES PORTIQUES

20 L = H =10 20 L =10 ; H = 5
W h1 h2 W h1 h2

18 18

16 W+1 H + 4(I1 1 L2 16 W W +1 H + 4(I1 1 L2
W k L I2 + 2L 14 k L I2 + 2L
H)H2 H)H2
14
=W + 1H + 1 L =W +1 H + ((Ω1 1 L
k =1 kL k L
2 4((Ω1 Ω2 )(L H)+2) H Ω 2 )(L H ) + 8) H
12 4
10 86 12
∞
k =1
10 10 2

Z =0.75 4
∞ 1086

8 8 Z =0.75
7.5 k = 1 7.5
Z =0.375
2 ∞ 10 4 2 k =1 Z =0.25
108 6 4 8

6∞ 6 6

∞ 108 6 4 2 k =1

4 Z =0.375 ∞ 10 8 6 4 2 k = 1
3.75 Z =0.25 4
3.75
2.5
2 2.5
2

LL

HH
00

0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10

9 Figure 2.12.3. 9 Figure 2.12.4.

Ω1σ L = H =10 Ω1σ L =10; H = 5
h1 h2 h1 h2
p1L p1L

88

77

6 6

Z =0.75

∞ k =1
10 8 6 4 2
5 5 2
10 86 4
k =1 Z =0.75

∞

4 4

3 k =1 Z =0.375 3 k =1
Z =0.25 ∞ 2
2 Z =0.375
64 Z =0.25
86 4 108
10

2∞ k =1 2 k=1

2 10 8 6 4 2
10 86 4 ∞

∞

11

LL
HH

00
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10

Figure 2.12.5. Figure 2.12.6.