Deformasjonsmetoden
Deformasjonsmetoden
Deformasjonsmetoden
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Fastinnspenningsmoment<br />
Pl<br />
m<br />
128<br />
21<br />
21 =<br />
Ligningssystem<br />
⎥⎥<br />
⎦<br />
⎤<br />
⎢⎢<br />
⎣<br />
⎡ −<br />
=<br />
⎥⎦<br />
⎤<br />
⎢⎣<br />
⎡<br />
⎥⎦<br />
⎤<br />
⎢⎣<br />
⎡<br />
0<br />
128<br />
21<br />
22<br />
8<br />
8<br />
19<br />
3<br />
2<br />
l<br />
l<br />
P<br />
EI<br />
θ<br />
θ<br />
Løsning :<br />
EI<br />
P<br />
EI<br />
P<br />
b<br />
2<br />
2<br />
3<br />
0.01<br />
0.0037<br />
l<br />
l<br />
= −<br />
=<br />
θ<br />
θ<br />
Elementkrefter:<br />
( )<br />
( )<br />
34<br />
2<br />
32<br />
2<br />
34<br />
21<br />
2<br />
23<br />
2<br />
21<br />
0.022<br />
0.01<br />
2<br />
1<br />
0.0037<br />
16<br />
0.022<br />
0.037<br />
6<br />
0.133<br />
0.0037<br />
2<br />
1<br />
0.01<br />
16<br />
0.133<br />
128<br />
21<br />
0.01<br />
3<br />
M<br />
P<br />
EI<br />
P<br />
EI<br />
M<br />
P<br />
EI<br />
P<br />
EI<br />
M<br />
M<br />
P<br />
EI<br />
P<br />
EI<br />
M<br />
P<br />
P<br />
EI<br />
P<br />
EI<br />
M<br />
−<br />
=<br />
=<br />
⎟⎠<br />
⎞<br />
⎜⎝<br />
⎛<br />
−<br />
=<br />
=<br />
=<br />
−<br />
=<br />
=<br />
⎟⎠<br />
⎞<br />
⎜⎝<br />
⎛<br />
+<br />
−<br />
=<br />
=<br />
+<br />
−<br />
=<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l<br />
l