5.1 :
1==81,49 ; 2=3=398,2 ; n1=n=160,6-1; n2=n3=30,8-1; Lh=21500; U=U=5,2.
5.2 .
40.
.
: =260280, =230260.
.
(2, .59): 1=0,5(min+HBmax)=0,5(260+280)=270
: 2=0,5(min+max)=0,5*(230+260)=245
5.3 .
:
σFlimb1=1,75*HB1=1,75*270=472,5
σFlimb2=1,75*HB2=1,75*245=428,8
:
Nk =60*n*c*Lh,
n - , ;
=1 - ;
Lh=21500 - ;
Nk1=60*160,6*1*21500=207*106,
Nk2=60*30,8*1*21500=39*106.
:
NFlim=4*106
(2, .60), = =1
(2, .60) , , Y=1.
SF , SF=1,7 (. .5.4)
:
5.4
(4, .96)
9563-60 (. .62), m=1,5.
:
dw1=m*z1=1,5*20=30;
dw2=m*z2=1,5*141=211,5.
w=0,5(dw1+ dw2)=0,5(30+211,5)=120,8.
bw=Ψbd*dw1=0,8*30=24. 6636-69 bw=24.
5.5
Ft=2T2/dw2=2*398,2*103/211,5=3763,6 H.
[. (5.50)]
KF=KA*KFb*KFv*KFα=1*1,15*1,03*1=1,18.
KA=1; KFb=1,15 (. . 5.8); KFα=1; KFv=1,03 (. .5.11)
5.7 9.
YFS1=4,08, YFS2=3,6 (. .67).
:
σFP1/ YFS1=277,9/4,08=68,1;
σFP2/ YFS2=252,2/3,6=70,1.
, . :
.
5%, , :
=100. Ψbd= /dw1=40/211,5=0,2, .
:
da1=dw1+2m=30+2*1,5=33;
|
|
da2=dw2+2m=211,5+2*1,5=214,5.
:
d f1 = dw1-2,5m=30-2,5*1,5=26,3;
d f2 = dw2-2,5m=211,5-2,5*1,5=207,8.
5.6 , :
Ft1=- Ft2=560H;
Fr1=- Fr2=Ft*tgα=560*0,364=203,8H ( α=20).
P=P=1,5; n1=n=2850-1; U=Upn=2,5
6.1
T1=30*p/πn1=30*1,5*103/3,14*2850=5,03
7.2 T1 Z(O).
6.2 [. (7.4)]:
, =40
d1=71.
d2=d1*U(1-ξ)=71*2,5(1-0,02)=173,9
d2=180.
6.3 (7.6):
a=0,55(d1+d2)+h=0,55(71+180)+6=144,1
h 7.2. =144.
6.4 (7.7):
L=2a+π(d1+d2)/2+(d2-d1)/4a=2*144+3,14(71+180)/2+(180-71)/4*144=682,3
L=710.
6.5 [. (7.8)]
6.6 [. (7.9)]
α=180-57(d2-d1)/=180-57(180-71)/630,5=170,14≥[α]
6.7 (7.1):
v=π*d1*n1/60*103=10,6/.
6.8 (7.31).
[. (7.29)]
Pp=P0*Cα*CL*Cu*Cp=0,95*0,97*0,82*1,14*0,9=0,78.
7.3 P0=0,95. Cα=0,97, Cp=0,9 (. .122).
(7.30) CL= Cu=1,14 (. .123)
Cz
z`=P/ Pp=1,5/0,78=1,9.
Cz=1 (. .123).
z=P/(Pp* Cz)=1,9
z=2.
6.9 [. (7.11)] σ0=1,6 =472 (. . 7.2):
F0= σ0*A=1,6*47=75,2.
6.10 [. (7.19)]
FB=2F0*z*sin(α1/2)=2*75,2*2*0,99=297,8.