The objective of this project is to use mathematics, science and engineering to design and analyze an excavator similar to the CAT shown in Figure 1. The simplified model of Figure 2 is define by the data in Table 1 and 2
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Points
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X (inch)
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Y(inch
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P1(inch)
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P2(inch
|
P3(inch)
|
WD(Lb.)
|
|
0
|
0
|
0
|
|
|
|
1000 100 D W = +
here x is the 3
git in your
udent ID
|
|
B
|
-25.456
|
49.456
|
|
|
|
|
C
|
-25.456
|
19.456
|
|
|
|
|
D
|
-13.456
|
19.456
|
|
|
|
|
A11
|
-8
|
8
|
11.766
|
|
|
|
A12
|
0
|
24
|
|
|
|
A21
|
0.9701
|
27.88
|
|
13.484
|
|
|
A22
|
-29.456
|
60.052
|
|
|
|
A31
|
-29.456
|
49.456
|
|
|
19.769
|
|
A32
|
-31.456
|
19.456
|
|
|
|
Links
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Mass (Kg)
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I (kg.m2)
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XG(in)
|
YG(in)
|
|
2
|
20.837
|
3.647
|
-7.299
|
26.820
|
|
3
|
26.526
|
2.329
|
-26.643
|
41.291
|
|
4
|
6.141
|
0.130
|
-22.445
|
19.456
|
|
C1
|
11.095
|
0.274
|
-5.537
|
1.852
|
|
C2
|
7.797
|
0.297
|
-6.446
|
35.723
|
|
C3
|
8.427
|
0.131
|
-30.031
|
41.253
|
|
P1
|
5.585
|
5.452
|
-1.198
|
19.209
|
|
P2
|
7.723
|
0.177
|
-22.622
|
52.828
|
|
P3
|
4.523
|
3.883
|
-31.023
|
27.112
|
Question 1: Submit the m-file on Blackboard under Project P2 Q1 Actuators 2 and 3 are locked retacted by 5 in from fully extented position respectively. Actuator one is being retrated at a constant velocity of 2 in/s.
1. Calculate the position of poid D when Piston 1 is retracted 8 in from fully extented position.
2. Calculate the force developed by the actuator when Piston 1 is retracted 8 in from fully extented position. (Your program should only display the position of point D and the force F dveloped by the piston in the coordinate system of origine O)
Question 2: Submit the m-file on Blackboard Project P2 Q2 Actuators 2 and 3 are locked retacted by 5 in from fully extented position respectively. Actuator 1 is being retrated at a constant velocity of 2 in/s.
1. Plot the position of poid D as a function of the piston axial position when it is being retracted from from fully extented position by 8 in.
2. Plot the force developed by the actuator as a function of the piston axial position when it is being retracted from from fully extented position by 8 in. (Your program should plot two figures: One for the position of point D and one for the force F)