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MACHINE DESIGN  An
32e1
PROBLEM 32e
Statement:
Draw freebody diagrams for the system of Problem 31e (pipe wrench).
Assumptions:
1.
A twodimensional model is adequate.
Solution:
See Mathcad file P0302e.
1.
A typical pipe wrench with a pipe clamped in its jaw is shown in Figure 32e(a).
When a force
F
hand
is applied on
the wrench, the piping system provides an equal and opposite force and a resisting torque,
T
pipe
.
T
F
pipe
hand
hand
a
F
(a)
FBD of pipe wrench and pipe
b
d
F
ay
F
ax
A
F
bt
F
bn
α
B
hand
F
(b)
FBD of pipe wrench only
FIGURE 32e
Free Body Diagrams for Problem 32e
2.
The pipe reacts with the wrench at the points of contact
A
and
B
.
The forces here will be directed along the
common normals and tangents.
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This note was uploaded on 04/26/2010 for the course MAE 3242 taught by Professor N/a during the Spring '10 term at University of TexasTyler.
 Spring '10
 N/A
 Machine Design

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