- - , ( ). Gmax :
Gmax = G + G + G + G, (42)
g - , , ; G - , ; Gn - (, , , ), ; G - , .
, D (), , H; sm (. . 7)
G=1,1*r*g*smax*(p*D*H+(2*p*D2)/4), (43)
r=7850 /3 ; 1,1 - ; g = 9,81 /2.
G=1,1*7850*9,81*0,01*(3,14*2,4*3,888+(2*3,14*2,42)/4)= 32,4
, s=s, D=D1, H=0.7*H.
G=r*g*s*(p*D* H+(p* D2/4)) (44)
G=7850*9.81*0,007*(3,14*2.6*0.7*3.888.+(3,14*2.62)/4)=14.8
, 1,2 , , :
G=1,2**g, (45)
= 970 . ( 1 1 2).
G=1,2*9,81*970=3708 =11,4
, , V ( ):
G = r*g*V, (46)
r r , /3.
r=1000 /3
Gc=1000*9,81*16 =157
Gmax=32,4+14,8+11,4+157=215,6 H
, .. V Vp c , 3.
Vp = V +V (47)
V= 0,25*p*D2*(c 0,5*D)=0.25*3,14*2,42*(2,4-0,25*2,4)=8,1 3
V=p*D3/24=3,14*2,43/24=1,8 3
Vp=8,1+1,8=9,9 3
(50):
Gc=1000*9,81*9,9=98,1
Gmax=32,4+14,8+11,4+98,1=156,7 H
-:
:
G= Gmax/z£ G (48)
G=(Gmax - Gc - G)/z£ G.. (486)
G G , ;
Gmax
, ;
z - ( - zon = 4);
z - (zu = 2);
G=156,7/4=39,1 £100 ( )
G=(156,7-98,1-11,4)/2=23,6 £80 ( )
- ( 100 ), ( 80 ).
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:
s=G/A £ [s] (49)
s - , ;
[s] - ( 200 [s] = 11 ; 300 [s] = 18,5 ), ;
= a*b - -, 2.
A=0,225*0,365=0,0725 2
s=52,2/0,0725=0,63 £ 11 .
200.
, - , :
k=0,85*s=0,85*0,01=0,0085
l=2*zp*(h-4*k)=2*2*(0,635-4*0,0085)=2,4
[t]=j*[s]=0,65*149*106=96850000 =96,85
t=G/0,7*k*l=39100/0,7*0,0085*2,4 =2,7 £[t] =96,85 ( )
) .
, . [s] s* (. . 1). d1 (. 9). d. . (. 7 ) (. ) .
I (. 7 ) 2 , - 5, . 5 6. 3. . .
7 8 (. 7 ) (). 8 9. 10 1 1, . , , - .
, , ,
=*N/w (50)
- ; N - (. ), ; w = (p*n)/30 - , /; n - (. ), /).
. =1,5.
w=p*125/30=13,1 /
=1,2*14000/13,1=1282,4 *
WP (3) :
Wp=p*d13/16, (51)
d1 d, .
Wp=3,14*0,083/16 = 0,0001 3
:
t=/W£[t], (52)
[t] = 0,5*[s] , .
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[t]=0,5*43,4*106= 56,7
t=12,8 £ 56,7
. 6 : ) ; ) : 1
- ; 2 - ; 3 - ; 4 -; 5 - ; 6 - ; 7- ; 8 - ; 9 - ; 10 - ; 11 - .
) .
, . , (, ) .
w, 0 , max w = w, , (. . 8). w = w , = f(w) .8 .
. 8 w (w - , .max).
w = w = f(w) . , w < w ( ) . , w > w ( ) . , , I, . II, . III - , , , . (. . 9), ( < []) , .
, , III, - . I, , II, , . , ( II) , . IV (. 8) - .
w , (61 , 61 ). w = (K/m)0,5 ( - , m - ) , m.
. 9. :
) : I - ( 10); 2 ( - 01, - 03, - 07);
) ( - , , ; - , );
) ;
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26-01-72-82. . 9 . , (. . 9 , ).
, .. (. 9 )
l1=H+h0+h1 h, (53)
- , ; h0 , ; h1 - , ; hm =1,5*d, .
03: h0=0,06 ; h1=0,265 ; hm==800 =0,8
l1=3,888+0,06+0,265-0,8=3,413
(. . 9 ),
l=l1 + l2, (54)
l2 - , .. , ,
l2=0,801
l=3,413 + 0,801=4,21
`l1 `l2
`l1=l1/l, (55)
`l2=1 -`l1, (56)
`l1=3,41/4,21=0,80
`l2=1- 0,80=0,20
,
m=p*d2*r*l/4, (57)
d - = 0,095 ; r = 7850 /3 - .
m=3,14*0,0952*7850*4,21/4 = 234,1
q` (58) . 10.
`q = (8*`l25 + 140*`l22*`l13 + 231*`l2*`l14 + 99*`l15)/(420*`l12), (58)
q=(8*0,25+140*0,22*0,83+231*0,2*0,84+99*0,85)/(420*0,82)=0,2
. 10. `m.=f(`l1)
, 4
Iz=p*d4/64 (59)
Iz=3,14*0,0954/64=4*10-6 4
, /
`=3** Iz/l12*l, (60)
=3*1,91*1011*4*10-6/3,41 2*4,21 =46819 /
:
m=m+qm
m =17,1+0.2*234,1=63,9
, /:
v=(`/(`q*m+`m))0,5, (61)
v=(46819/(63,9))0,5 = 27 /
:
)
w/w £ 0,7, (62)
)
1,3 £ w/w £ 1,6, (62)
w - , /.
w/w=13,1 /27 = 0,485 £ 0,7
.
Tkp=0,23 £0,35
() . . . . , : [s] = s* (. . 1).
. ( 24.201.17-90).
, :
F=T/0.5*dc (63)
T , dc
:
=2*p*dc*(0,7k-c) (64)
=0,85*s ( .), s .
:
τ=F/≤[τ] (65)
τ , F , , [τ] = φ[σ] , φ=0,65 .
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F=1,282/0,5*0,11=23,3
=2*3,14*0,11*(0,7*5,1*10-3-0,002)=5,1*10-3 2
τ=15,53≤87,16 .