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PRP_6_krut

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2.1 Napätia a deformácie pri krútení<br />

• Po dosadení do vzťahu pre krútiaci moment M k<br />

dostaneme:<br />

– z čoho:<br />

2<br />

M<br />

k<br />

G. . r . dS G. .<br />

J<br />

p<br />

S<br />

L<br />

M<br />

k<br />

M<br />

k<br />

M<br />

k<br />

, d dx , dx<br />

G. J G. J<br />

<br />

G.<br />

J<br />

p p 0 p<br />

GJ<br />

.<br />

p<br />

– súčin: nazývame tuhosť v krútení (torzná tuhosť)<br />

L<br />

27

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