An athletic footwear manufacturer wants a device to test rubber heels for their ability to withstand millions of cycles of force similar to that which a walking human's foot applies to the ground. Figure P8-6 shows a typical walker's force-time function and a pressure-volume curve for a piston-accumulator. Design a cam-follower system to drive the piston in a way that will create a force-time function on the heel similar to
An athletic footwear manufacturer wants a device to test rubber heels for their ability to withstand millions of cycles of force similar to that which a walking human's foot applies to the ground. Figure P8-6 shows a typical walker's force-time function and a pressure-volume curve for a piston-accumulator. Design a cam-follower system to drive the piston in a way that will create a force-time function on the heel similar to
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![An athletic footwear manufacturer wants a device to test rubber heels for their ability
to withstand millions of cycles of force similar to that which a walking human's foot
applies to the ground. Figure P8-6 shows a typical walker's force-time function and a
pressure-volume curve for a piston-accumulator. Design a cam-follower system to
drive the piston in a way that will create a force-time function on the heel similar to
the one shown. Choose suitable piston diameters at each end.
Human Walking Force
System Pressure-Volumc Function
Force
120
Ib
Pump
120 -
pressure
psi
80 +
80 -
30 psi/n?
40
40
Time
0
T= 0.5 sec
Stroke volume in
(a)
(b)
Pump body
- Accumulator
Heel
Spring
Follower
Piston
Piston
Cam
Oil
(c)
FIGURE P8-6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fddf493e5-4bb1-49d9-861c-f9adb77c6f2f%2Fd8574345-4b24-4e91-8a91-abc9b651fb47%2Fuahives_processed.png&w=3840&q=75)
Transcribed Image Text:An athletic footwear manufacturer wants a device to test rubber heels for their ability
to withstand millions of cycles of force similar to that which a walking human's foot
applies to the ground. Figure P8-6 shows a typical walker's force-time function and a
pressure-volume curve for a piston-accumulator. Design a cam-follower system to
drive the piston in a way that will create a force-time function on the heel similar to
the one shown. Choose suitable piston diameters at each end.
Human Walking Force
System Pressure-Volumc Function
Force
120
Ib
Pump
120 -
pressure
psi
80 +
80 -
30 psi/n?
40
40
Time
0
T= 0.5 sec
Stroke volume in
(a)
(b)
Pump body
- Accumulator
Heel
Spring
Follower
Piston
Piston
Cam
Oil
(c)
FIGURE P8-6
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