Fasthet
Fasthet
Fasthet
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RA nov 2007<br />
τmax<br />
σb<br />
Plan spenningstilstand<br />
σa<br />
σ = 0<br />
Egentlig 3 hovedspenninger:<br />
σ ≥ σ ≥ σ<br />
1 2 3<br />
σ = max( σ , σ ,0)<br />
1<br />
σ = min( σ , σ ,0)<br />
3<br />
a b<br />
a b<br />
fasthet 13
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