Metal Machining - Theory and Applications Episode 2 Part 9 doc
Metal Machining - Theory and Applications Episode 2 Part 9 doc
... u˘
z
d
l
hD
ikj
21 10
+ ——
[
121 0
]
12
1 120
0000 (A2 .26 )
and
11 1
q*V
e
1
qD
ikj
1
hT
0
D
ikj
1
{F}
e
= ———
{}
– ———
{}
– ———
{}
(A2 .27 )
4
1
3
1
3
1
10 0
Global assembly of equations (A2 .20 a), with ... (3 .9) (p
r
/
τ
max
)(p
r
/
τ
max
)/c
Spherical 0. 42 2.6 6 .2
Cylindrical 0. 39 2. 2 5.6
Conical 0.50 1.6 3 .2
Wedge-like 0.50 1.0 2. 0
Childs Part 3 31:3 :20 00 10:4...
Metal Machining - Theory and Applications Episode 2 Part 11 ppt
... [10
-6
K
-1
]
K01–10 √* √* √* 325 0 94 .5
1
0 .9 – – –
K20 96 2 2 3160 15.7 0 .9 – – –
K05 20 √* √* 325 0 93 .2
1
0.85 – – –
– √* √* √* 3300 93 .9
1
1.1 – – –
– 91 0 1 8 320 0 14 .2 0.8
K20 90 .5 6 3.5 326 0 ... frame 20 2–3
Lagrangian reference frame 20 2–3
node separation at cutting edge 20 3, 20 7 9,
21 8 20
rigid-plastic models 20 1 2, 3 49 50
strain-displaceme...
Metal Machining - Theory and Applications Episode 2 Part 10 pot
... 25 – 49 30–45 32 40 30–35 27 –30
ferritic stainless 21 24 22 25 23 26 24 27 25 29
austenitic stainless 14–17 15–18 17 21 22 25 26 29
high manganese 14 16 19 21 22
Aluminium
pure, 1000 series 20 0 24 0 ... [°C]
0 20 0 400 600 800
Iron and steel
pure iron* 85 64 50 38 31
0.04–0 .25 C 52 60 48–54 42 45 35–37 29 –30
0 .25 –0.8C 51– 52 46–48 39 42 33–35 29 –30
0.8–1.2C 45...
Metal Machining - Theory and Applications Episode 2 Part 8 pptx
... 3(s
xx
′
2
+ s
yy
′
2
+ s
zz
′
2
) + 6(s
2
xy
+ s
2
yz
+ s
2
zy
) ≡
(s
xx
– s
yy
)
2
+ (s
yy
– s
zz
)
2
+ (s
zz
– s
xx
)
2
+ 6(s
2
xy
+ s
2
yz
+ s
2
zy
) = 6k
2
or 2Y
2
(A1 .26 b)
which is the same ... s
r
2
. So s
r
is also a stress invariant (it is known as the
second stress invariant). From equation (A1 .25 )
s
r
2
= s
2
xx
+ s
2
yy
+ s
2
zz
+2( s
2...
Metal Machining - Theory and Applications Episode 2 Part 7 ppt
... addition
s
r
′
2
= s
r
2
–3s
m
2
=(s
1
2
+ s
2
2
+ s
3
2
) – 3s
m
2
(A1.5)
After substituting for s
m
from equation (A1.1),
3s
r
′
2
=(s
1
– s
2
)
2
+(s
2
– s
3
)
2
+(s
3
– s
1
)
2
(A1.6)
The yield ... stresses:
1
s
–
2
=—
[
(s
1
– s
2
)
2
+(s
2
– s
3
)
2
+(s
3
– s
1
)
2
]
= Y
2
or 3k
2
(A1.7)
2
330 Appendix 1
Fig. A1 .2 Geometrical representation...
Metal Machining - Theory and Applications Episode 2 Part 6 pot
... reliable and improved machin-
ing processes, free from fatal damage and trouble (Micheletti et al., 197 6; Tlusty and
Andrews, 198 3; Tonshoff et al., 198 8; Dan and Mathew, 199 0; Byrne et al., 199 5). ... P10 49 0.10 0.33 5 12 17 35 0.4
MVVNN2 020 M16 VNMG160404 53 P10 45 0 .20 0.48 4 11 17 35 0.4
MVVNN2 020 M16 VNMG160408 53 P10 38 0.40 0.70 4 11 17 35 0.8
Childs Part 3 31:3 :2...
Metal Machining - Theory and Applications Episode 2 Part 5 ppsx
... of Figure 9. 4,
for a concave surface (r
w
– d
R
)
2
– (r
w
– d
e
)
2
= R
2
– (R – d
e
)
2
}
(9. 9a)
for a convex survace (r
w
+ d
R
)
2
– (r
w
+ d
e
)
2
= R
2
– (R – d
e
)
2
Hence
d
e
2r
w
– d
R
for ... C
p
(x)
29 2 Process selection, improvement and control
Fig. 9. 12 Fuzzy optimization of cutting conditions; only three constraints 1, 4 and 10 are considered
Childs...
Metal Machining - Theory and Applications Episode 2 Part 4 pptx
... 0.007ln V)
F
f
= 6 29 f
0.30
d
0. 720
+ 1 199 (VS
3.58
– 0. 023 V
0 .27
)
}
(9. 2b)
× (VB
–0.66
– 0 .23 V
0 .27
) (VN
0.03
– 0 .23 V
0 .27
)
F
c
= 1862f
0 .94
d
1.11
+ 26 77(VS
0 .24
– 0.05ln V)
×(VB
0 .23 –
0.05ln ... m/min,
f
= 0 .2 mm and
d
= 2 mm with (a) conventional, (b) type I and (c) type II P20 carbide
tools
Childs Part 2 28:3 :20 00 3: 19 pm Page 25 9
9
Pro...
Metal Machining - Theory and Applications Episode 2 Part 3 pot
... (2. 24d)
V=100 m/min V =20 0 m/min
m
µ
n* m
µ
n*
Steel P 1.0 2. 31 3. 89 1.0 2. 48 3 .22
Steel X 0 .99 1 .25 3.05 0 .96 1.43 2. 06
Steel Y 0 .97 0.76 5 .98 0 .99 1.04 3.04
Steel L 0.74 0.38 8.78 0.88 0. 72 ...
–0.000015(T–370)
2
a = 0.00 028 , m = 0.0016
Childs Part 2 28:3 :20 00 3:17 pm Page 24 2
24 6 Applications of finite element analysis
Fig. 8.16
continued
Childs Part...
Metal Machining - Theory and Applications Episode 2 Part 2 pps
... (ICM) 21 3
Fig. 7. 12 Developed flow-chart of the iterative convergence method
Childs Part 2 28:3 :20 00 3:15 pm Page 21 3
22 8 Applications of finite element analysis
Fig. 8.1
continued
Childs Part 2 28:3 :20 00 ... cutting condi-
tions as Figure 7.14
Childs Part 2 28:3 :20 00 3:15 pm Page 21 6
s
—
= (C
1
+ C
5
e
—
n
)(G
T
/G
29 3
) + C
2
exp[(–C
3
+ C
4
1ne
—
˘
)T] (7...
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