Transcript Progress Report 1

THE CRUSHED EXPERIMENT
By: Carlos Sanabria
Justin Roose
Phillip Munday
THE EXPERIMENT
 We
are to apply a quasi-hydrostatic pressure on a
6” diameter pipe.
Figure 1 – Sketch
Pipe under hydrostatic pressure
2
THE DESIGN PROCESS
Outer Ring
Hydrostatic
Press
Pipe
Spacing
(incompressible
media)
Figure 2 – Transverse cross section of the pipe
being compressed by six sections
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FINAL DESIGN (FALL)
Design for a
surface
pressure up
to 10,000 psi
Figure 3 – Final Design for the fall
semester
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THE PROBLEM:

The strongest actuators
that can accommodate our
budget are not nearly as
strong as our calculations
assumed

Our sponsor advised that
we should design around
the actuator’s force
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AVAILABLE ACTUATORS
CONSIDERING OUR BUDGET
Figure 4 – Model
Number RW50
Figure 5 – Model
Number RW51
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ACTUATOR DIMENSIONS
5.35 in
2.25 in
1.63 in
1.94 in
Figure 6 – RW50
Dimensions
4.34 in
4.85 in
Figure 7 – RW51
Dimensions
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NEW RING DIMENSIONS
14.05 in
Figure 8 – Ring
Dimensions using RW50
19.68 in
Figure 9 – Ring
Dimensions using RW51
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NEW SYSTEM… WHAT NEXT?
New I-Beam
Dimensions
Replacing
Actuators
Natural Rubber
Insertion
Figure 10 – New System Layout and next steps
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I - BEAMS
w
Static Parameters
s
h
Dimensions
Moment Section
of Inertia Modulus
Designation
h
(in)
t
w
(in)
s
(in)
Area
(in2)
Weight
(lb/ft)
I (in4)
Z (in3)
S 5 x 14.75
S 5 x 10
5
5
3.284 0.494 4.34
3.004 0.214 2.94
14.75
10
15.2
12.3
6.09
4.92
S 4 x 9.5
S 4 x 7.7
4
4
2.796 0.326 2.79
2.663 0.193 2.26
9.5
7.7
6.79
6.08
3.39
3.04
S 3 x 7.5
S 3 x 5.7
3
3
2.509 0.349 2.21
2.33 0.17 1.67
7.5
5.7
2.93
2.52
1.95
1.68
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I - BEAMS
12.73 in
w
δ
s
h
8.11 in
t
Figure 11 – Ring Piece Dimensions and Deflection
h
4 in
w
s
2.796 in
0.326 in
t
0.293 in
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I - BEAMS
NOT SIGNIFICANT!
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I - BEAMS
2.796 in
4 in
0.326 in
0.293 in
Figure 12 – I - beam dimensions
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NATURAL RUBBER INSERTION
Natural Rubber
Insertion
Figure 13 – A close up view of the
natural rubber insertion
Dimensions
have been
recalculated
with a
rubber layer
of 1/8”
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REPLACING ACTUATORS BY
STATIONARY COLUMNS
COLUMNS ARE
CHARACTERIZED BY IT’S
SLENDERNESS RATIO
L = LENGTH OF THE COLUMN
K = RADIUS OF GYRATION
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REPLACING ACTUATORS BY
STATIONARY COLUMNS

If the Slenderness Ratio < 10


The column is now bound by the Mechanical Properties
To ensure this:

L = 1.94 inch


same length as hydraulic cylinders
Diameter > 0.776 inch
Diameter is set to be 1 inch
 Made out of structural steel ASTM - A36


Same as I-beams
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REPLACING ACTUATORS BY
STATIONARY COLUMNS

Stress = 12 ksi
Strain = 0.0004
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FINAL SYSTEM
New I-Beam
Dimensions
Columns
Natural Rubber
Insertion
Figure 14 – Final System
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SOME DRAWINGS
(SECTIONS)
2.4 in
2 in
3.05 in
3 in
Figure 15 – Section Drawing
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CYLINDERS
1.9 in
Figure 16 – Cylinder
Drawing
COLUMNS
1.9 in
Figure 17 – Column
Drawing
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I - BEAM
12.73 in
w
s
h
8.11 in
t
h
w
s
4 in
2.796 in
0.326 in
t
0.293 in
Figure 18 – I - beam dimensions
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