PRP_6_krut
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1.2.1 Steinerova veta<br />
• Podobne možno určiť kvadratický moment k osi y’ :<br />
2<br />
J<br />
y'<br />
J y<br />
n S<br />
• Deviačný moment k posunutým osiam:<br />
<br />
<br />
Dyz<br />
' '<br />
z ' y ' dS z n y m dS zydS n ydS m zdS mn dS<br />
S S S S S S<br />
<br />
S<br />
<br />
yz<br />
– kde: dS S<br />
potom:<br />
S<br />
<br />
S<br />
zydS D<br />
zdS <br />
<br />
S<br />
ydS 0<br />
D D mnS<br />
y' z'<br />
yz<br />
11
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