SKRIPTA RIJEÅ ENIH ZADATAKA IZ OTPORNOSTI MATERIJALA
SKRIPTA RIJEÅ ENIH ZADATAKA IZ OTPORNOSTI MATERIJALA
SKRIPTA RIJEÅ ENIH ZADATAKA IZ OTPORNOSTI MATERIJALA
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26<br />
21. Zadatak<br />
Odrediti deformaciju dijagonale �eli�nog elementa.<br />
5<br />
5<br />
5<br />
5<br />
5<br />
5<br />
5<br />
5<br />
10<br />
5<br />
,<br />
19<br />
2<br />
10<br />
75<br />
,<br />
9<br />
15<br />
10<br />
2<br />
3<br />
,<br />
0<br />
1<br />
1<br />
2<br />
10<br />
9<br />
10<br />
2<br />
60<br />
3<br />
,<br />
0<br />
10<br />
30<br />
10<br />
2<br />
60<br />
15<br />
60<br />
3<br />
,<br />
0<br />
10<br />
2<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 />
⋅<br />
=<br />
=<br />
=<br />
=<br />
=<br />
⋅<br />
=<br />
xy<br />
xy<br />
xy<br />
xy<br />
xy<br />
x<br />
yy<br />
x<br />
xx<br />
xy<br />
x<br />
E<br />
G<br />
E<br />
E<br />
MPa<br />
MPa<br />
MPa<br />
E<br />
ε<br />
γ<br />
τ<br />
ν<br />
τ<br />
ε<br />
σ<br />
ν<br />
ε<br />
σ<br />
ε<br />
τ<br />
σ<br />
ν<br />
Relativna deformacija dijagonale :<br />
cm<br />
d<br />
d<br />
d<br />
xy<br />
yy<br />
xx<br />
d<br />
10<br />
30<br />
sin<br />
5<br />
5<br />
30<br />
sin<br />
10<br />
69<br />
,<br />
28<br />
60<br />
sin<br />
10<br />
75<br />
,<br />
9<br />
30<br />
sin<br />
10<br />
9<br />
30<br />
cos<br />
10<br />
30<br />
2<br />
sin<br />
sin<br />
cos<br />
5<br />
5<br />
2<br />
5<br />
2<br />
5<br />
2<br />
2<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 />
ε<br />
ϕ<br />
ε<br />
ϕ<br />
ε<br />
ϕ<br />
ε<br />
ε<br />
Apsolutna deformacija :<br />
mm<br />
d<br />
d d<br />
3<br />
5<br />
10<br />
69<br />
,<br />
28<br />
100<br />
10<br />
69<br />
,<br />
28<br />
−<br />
−<br />
⋅<br />
=<br />
⋅<br />
⋅<br />
=<br />
⋅<br />
=<br />
∆ ε