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Deformasjonsmetoden

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<strong>Deformasjonsmetoden</strong><br />

oppbygging av systemligning Kr = R<br />

θ 2<br />

w 2<br />

θ 3 w 3<br />

Systemligning<br />

30 m<br />

90 m<br />

P<br />

EI<br />

l<br />

4EI<br />

l<br />

2EI<br />

l<br />

⎡3EI 16EI 8EI 3EI ⎤<br />

+ − ⎡ 21 ⎤ P<br />

⎢ 2<br />

l l l l ⎥<br />

2 ⎢<br />

− l<br />

⎢ ⎥⎡ θ ⎤ 128 ⎥<br />

⎢ 8EI 16EI 6EI 6EI ⎢ ⎥<br />

+ − ⎥⎢<br />

θ<br />

⎥<br />

2 3 = ⎢ 0<br />

⎢ l l l l ⎥⎢ ⎥ ⎥<br />

⎢ ⎥⎣⎢<br />

w ⎢<br />

2⎥⎦<br />

117 ⎥<br />

⎢⎣<br />

3EI 6EI 3EI 6EI P<br />

− − + ⎢ ⎥<br />

2 2 3 3 ⎣ 128 ⎦<br />

l l l l ⎥⎦<br />

75 m

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