Tài liệu shi20396 chương 11 pdf
Tài liệu shi20396 chương 11 pdf
... min/h
= 3.76 h Ans.
11- 20 While we made some use of the log F-log x plot in Probs. 11- 15 and 11- 17, the principal
use of Fig. 11- 5 is to understand equations (11- 6) and (11- 7) in the discovery ... lbf.
0.1
Ϫ1
Ϫ0.658
1
0
10
1
10
2
2
10
2
2
10
3
495.6
6685
3
10
4
4
10
3
3
x
log x
F
A
D
B
log F
540
shi20396_ ch11.qxd 8/12/03 9:51 AM Page 311
Chapter 11
11-1 For the deep-groove 02...
Tài liệu shi20396 chương 1 pdf
... cos
2
θ
cos θ sin θ
= 0
And solve resulting tran-
scendental for
θ*
.
shi20396_ ch01.qxd 6/5/03 12 :11 PM Page 4
Chapter 1 5
1 -11
(a)
x
1
+ x
2
= X
1
+ e
1
+ X
2
+ e
2
error = e = (x
1
+ x
2
) − ... sin 45
◦
+ cos 45
◦
) = 15 lbf
fN = 0.20(17.28) = 3.54 lbf
θ
cr
= tan
−1
f = tan
−1
(0.20) = 11. 31
◦
11. 31° <θ <90°
1-7
(a)
F = F
0
+ k(0) = F
0
T
1
= F
0
r Ans.
(b) When teeth ar...
Tài liệu shi20396 chương 7 pdf
... 342
= 94 110 cycles
N
R
2
= 94 110 − 60 000 = 34 110 cycles
0.9(76)
38
=
a
3
(10
3
)
b
3
a
3
(34 110 )
b
3
⇒ 1.8 = (0.029 317)
b
3
b
3
=
log 1.8
log(0.029 317)
=−0.166 531, a
3
=
38
(34 110 )
−0.166 ... kpsi
b =−
1
3
log
0.9(76)
30
=−0 .119 31
σ
1
= 48 kpsi, N
1
=
48
155.95
1/−0 .119 31
= 19 460 cycles
σ
2
= 38 kpsi, N
2
=
38
155.95
1/−0 .119 31
= 137 880 cycles
shi20396_ ch07.q...
Tài liệu shi20396 chương 4 pdf
... 72.39
◦
− 45
◦
= 27.39
◦
cw
4 -11
(a)
(b)
C =
0 + 10
2
= 5
CD =
10 − 0
2
= 5
R =
5
2
+ 4
2
= 6.40
σ
1
= 5 + 6.40 = 11. 40
σ
2
= 0, σ
3
= 5 − 6.40 =−1.40
τ
1/3
= R = 6.40, τ
1/2
=
11. 40
2
= 5.70, τ
2/3
=
1.40
2
= ... + 110 0(7.75 − l) = 0
R
A
= 3100 − 14 525/l
M
x=3
= 3R
A
= 9300 − 43 575/l
M
B
= R
A
l − 2000(l − 3) = 110 0 l − 8525
To minimize the moments, equate
M
x=3
to
−M
B
givin...
Tài liệu shi20396 chương 9 pdf
... 91.2 = eff
τ
=
117 9
0.248
= 4754 psi
τ
=
2948
0.248
= 11 887 psi
τ
max
=
4127
0.248
.
= 12 800 psi
Now consider the case of uninterrupted welds,
b
1
= 0
A = 1.414(h)(8 − 0) = 11. 31h
I
u
= (8 ... in
4
τ
=
10 000
8.48h
=
117 9
h
psi
6"
8"
shi20396_ ch09.qxd 8/19/03 9:30 AM Page 258
Chapter 9 259
τ
=
Mc
I
=
10 000(10)(8/2)
135.7h
=
2948
h
psi
τ
max
=
τ
2
+ τ
2
=...
Tài liệu shi20396 chương 16 pdf
... T
2
19
The root is
10(26.67) = 266.7 lbf ·in
¯ω = 121 .11/ 10 = 12 .111 rad/s
C
s
= 0.0549 (same)
ω
max
= 121 .11/ 10 = 12 .111 rad/s Ans.
ω
min
= 117 .81/10 = 11. 781 rad/s Ans.
E
1
, E
2
, E
and peak power ... Ans.
ω
min
= 117 .81 rad/s Ans.
¯ω =
124.41 +117 .81
2
= 121 .11 rad/s
C
s
=
ω
max
− ω
min
(ω
max
+ ω
min
)/2
=
124.41 117 .81
(124.41 +117 .81)/2
= 0.0545 Ans.
E
1
=
1
2
I ω...
Tài liệu Vật lý 11 pdf
... điện dung của
tụ điện (C)
Q
U
- Biểu thức:
Q
C
U
=
- Đơn vị: fara (F)
+ Chú ý :
6
110 F F
=
9
110 nF F
=
12
110 pFF
=
... cã:
…
…
•
•
C
1
C
2
C
n
b, GhÐp nèi tiÕp
3, GhÐp tô ®iÖn
a, GhÐp song song
•
•
C
2
C
1
….
C
n
-+-+ -+
-
+
12
12
12
111 1
bn
bn
bn
UUU U
CCC C
QQQ Q
⎧
=+++
⎪
⎪
=+++
⎨
⎪
⎪
====
⎩
Ta cã:
Bài 1: Phát biểu nào sau
Tài liệu shi20396 chương 6 doc
... =−
S
yc
σ
y
=−
275
−120.9
= 2.27 Ans.
(d)
σ
x
= 110
kpsi,
σ
y
= 40
kpsi,
τ
xy
= 10
kpsi cw.
σ
A
, σ
B
= 111 .4, 38.6
kpsi. For the
first quadrant
n =
S
yt
σ
A
=
235
111 .4
= 2 .11 Ans.
Graphical Solution:
(a)
n ... Ans.
(d)
σ
x
= 11
kpsi,
σ
y
= 4
kpsi,
τ
xy
= 1
kpsi.
σ
A
, σ
B
= 11. 14, 3.86
kpsi. For the first quadrant
n =
S
A
σ
A
=
S
yt
σ
A
=
22
11. 14
= 1.97 Ans.
30
30
S
ut
ϭ 22...
Tài liệu shi20396 chương 2 doc
... (Mrev) f
fx fx
2
111 111 1
222 4488
33 8114 342
457228 912
5 3115 5 775
61 9114 684
715105 735
812 96768
911 99891
10 9 90 900
11 7 77 847
12 5 60 720
Sum 78 237 119 3 7673
µ
x
= 119 3(10
6
)/237 = ... 450 40 500 0.0072
100 8 800 80 000 0. 0116
110 121320 145 200 0.0174
120 6 720 86 400 0.0087
130 10 1300 169 000 0.0145
140 8 112 0 156 800 0. 0116
150 5 750 112 500 0.0174
160 2 32...
Tài liệu shi20396 chương 3 docx
... 30 1215.0 49 207.50
41.5 65 2697.5 111 946.30
42.5 101 4292.5 182 431.30
43.5 112 4872.0 211 932.00
44.5 90 4005.0 178 222.50
45.5 54 2457.0 111 793.50
46.5 25 116 2.5 54 056.25
47.5 9 427.5 20 306.25
48.5 ... 9
=
11. 450 57 899.882 8 18.625 34 1456.6986
80.0 5.10 3.178 983 208.608
85.0 6.48 4.039 178 221.646
90.0 8.01 4.992 873 234.684
95.0 9.58 5.971 501 247.722
100.0 11. 18 6.968...
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