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STABILITATEA ŞI DINAMICA CONSTRUCŢIILOR 141<br />

EI<br />

EI<br />

2EI<br />

EI<br />

2EI 2EI<br />

5 6<br />

3<br />

4<br />

2<br />

1<br />

2<br />

1<br />

Z5<br />

a .<br />

b.<br />

c.<br />

6EI<br />

2<br />

a<br />

e.<br />

ψ<br />

a<br />

∆<br />

=<br />

6 EI<br />

2<br />

a<br />

6EI<br />

2<br />

a<br />

ψ<br />

a<br />

∆<br />

=<br />

r11<br />

3 ⋅ 2EI<br />

2<br />

a<br />

r 51<br />

6EI<br />

2<br />

a<br />

6 ⋅ 2EI<br />

2<br />

a<br />

d.<br />

6EI<br />

2<br />

a<br />

f.<br />

Fig.3.10.a<br />

Z3<br />

Z6<br />

Z4<br />

r31<br />

Z1 = 1<br />

r61<br />

r41<br />

Z2<br />

Z1<br />

r21<br />

6EI<br />

2<br />

a<br />

3 ⋅ 2EI<br />

2<br />

a<br />

r21<br />

6EI<br />

2<br />

a<br />

r11

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