[ (7.4)]
Fp= 12,8 (Iω)2 (πDcp/Ho)10-8= 12,8 (132282)2 (π42,4/82,5)10-8=285 .
, [ (7.5)]
Fp..= FpK2 (100/uk)2 =2851.62(100/6.5)2 =173000 ,
[ (7.6)]
Foc=FpΔ/(2Ho)=2856/(282.5)=10.4
[ (7.7)]
Foc'' = FPH1/(HpKpm)=28511.9/(30.10.9614)=10.4
1 = 86,4 + 7 6+ 1 16= 119 = 11,9 ( 5 %);
=(B-b)/2=(87-26,8)/2=30,1
Foc ( ) F'oc F, [ (7.8)]
Foc = F'oc + F= 10,4 + 29,2 = 39,6
F. = 39,6 606 = 24 000 .
sp = nc22 =8 4 3,6= 115 2.
24 000
σ= F. / sp=24000/115=209 /2, .
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