1)
1 2 (40-100)
T -12..14
2)
Rb
64. . . , , ( ) (. . 3.14, ), .
E 3
1) .
2)-
3)τ≤0,9*Rs
Rs-
Rs=0,58Ry
σ=M/c1*W≤Ry*γc
c1-, ( 66 )
e<=3
t<=0,9Rs
C1 .
, = */R.
,
M/c1*W min R, - , W min ,1 . =0,5 Rs c1 = c. 0,5 Rs<<0,9Rs C1
C1 = 1,05** = 1,05 [(1-(/Rs)^2)/ (1- (/Rs)^2)]
- , 0,7 , ( =0); =Q/th - .
.
Mx/x *Wx min + My/* W min R. 0,5 Rs. . 5.