Tehniline mehaanika II Labor 5 - Saleda puitvarda survekatse
1 20 196 3,40
2 60 588 6,89
FK L3 392 0,93
= = = 1705,9 Nm2
48 48 0,00349
kus FK = FK2 FK1 = 588 196 = 392 N
wK = a2 a1 = 6,89 3,40 = 3,49 mm
L = 90cm
3. Varda teoreetiline läbipaine
zF l2 wo
= F = kF ; =
8EIy F
1-F
EI
2 EIy 2 1706
= 2 = = 15,13 kN
l 8 1,0552
Kui zF = 5 mm, siis
2 5 10-3 1,0552
= = = 4,0779 10-7 (m/N) = 0,408 (/)
8 8 1706
Kui zF = 10 mm, siis
2 10 10-3 1,0552
= = = 8,1558 10-7 (m/N) = 0,816 (/)
8 8 1706
Tabel 5. Arvutustabel, zF =0,5mm
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