Application of Probability to Mechanical Design
109
S OZ
Figure 2.39 Example 2.20 metal belt on a pulley.
and
Mc E
~T B ~
~
I
r
with c=0.0015in/2 and E=30 × 106 psi
30 x 106 (0"0~ 15 ) (22’!00)
-~
-amax + amin 1 [(22,:00 39rl ) 3~9rl 1
°’meaa -2
- 2
+
+
_
O’max -- O’mi n 1 I(22,:00
3~1.)
3;1]
o-~ -
2
- ~
+
- -(11,250)
-
psi -~-r
2r
(2.117)
(2.118)
(2.119)
109
S OZ
Figure 2.39 Example 2.20 metal belt on a pulley.
and
Mc E
~T B ~
~
I
r
with c=0.0015in/2 and E=30 × 106 psi
30 x 106 (0"0~ 15 ) (22’!00)
-~
-amax + amin 1 [(22,:00 39rl ) 3~9rl 1
°’meaa -2
- 2
+
+
_
O’max -- O’mi n 1 I(22,:00
3~1.)
3;1]
o-~ -
2
- ~
+
- -(11,250)
-
psi -~-r
2r
(2.117)
(2.118)
(2.119)