Generalize Prob. 3-62 for a solid shaft of diameter d replaced with a hollow shaft of the same material with an outside diameter d , and an inside diameter that is a fraction of the outside diameter, x × d , where x is any value between zero and one. Obtain expressions for percentage reduction in torque transmission and percentage reduction in weight in terms of only x . Notice that the length and diameter of the shaft, and the material, are not needed for this comparison. Plot both results on the same axis for the range 0 < x < 1. From the plot, what is the approximate value of x to obtain the greatest difference between the percent decrease in weight and the percent decrease in torque?
Generalize Prob. 3-62 for a solid shaft of diameter d replaced with a hollow shaft of the same material with an outside diameter d , and an inside diameter that is a fraction of the outside diameter, x × d , where x is any value between zero and one. Obtain expressions for percentage reduction in torque transmission and percentage reduction in weight in terms of only x . Notice that the length and diameter of the shaft, and the material, are not needed for this comparison. Plot both results on the same axis for the range 0 < x < 1. From the plot, what is the approximate value of x to obtain the greatest difference between the percent decrease in weight and the percent decrease in torque?
Solution Summary: The author plots the expressions for percentage reduction in torque transmission, torque reduction, and shaft weight on the same axis.
Generalize Prob. 3-62 for a solid shaft of diameter d replaced with a hollow shaft of the same material with an outside diameter d, and an inside diameter that is a fraction of the outside diameter, x × d, where x is any value between zero and one. Obtain expressions for percentage reduction in torque transmission and percentage reduction in weight in terms of only x. Notice that the length and diameter of the shaft, and the material, are not needed for this comparison. Plot both results on the same axis for the range 0 < x < 1. From the plot, what is the approximate value of x to obtain the greatest difference between the percent decrease in weight and the percent decrease in torque?
given below:
A rectangular wing with wing twist yields the spanwise circulation distribution
kbV1
roy) = kbv. (2)
where k is a constant, b is the span length and V. is the free-stream velocity. The wing has an
aspect ratio of 4. For all wing sections, the lift curve slope (ag) is 2 and the zero-lift angle of
attack (a=0) is 0.
a. Derive expressions for the downwash (w) and induced angle of attack a distributions
along the span.
b. Derive an expression for the induced drag coefficient.
c. Calculate the span efficiency factor.
d. Calculate the value of k if the wing has a washout and the difference between the
geometric angles of attack of the root (y = 0) and the tip (y = tb/2) is:
a(y = 0) a(y = ±b/2) = /18
Hint: Use the coordinate transformation y = cos (0)
۳/۱
العنوان
O
не
شكا
+91x PU + 96852
A heavy car plunges into a lake during an accident and lands at the bottom of the lake
on its wheels as shown in figure. The door is 1.2 m high and I m wide, and the top edge of
Deine the hadrostatic force on the
Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required
motion is as follows;
1- Rising 60 mm in 135° with uniform acceleration and retardation motion.
2- Dwell 90°
3- Falling 60 mm for 135° with Uniform acceleration-retardation motion.
Then design the cam profile to give the above displacement diagram if the minimum circle
diameter of the cam is 50 mm.
=
-20125
750 x2.01
Plot the displacement diagram for a cam with roller follower of diameter 10 mm. The required
motion is as follows;
1- Rising 60 mm in 135° with uniform acceleration and retardation motion.
2- Dwell 90°
3- Falling 60 mm for 135° with Uniform acceleration-retardation motion.
Then design the cam profile to give the above displacement diagram if the minimum circle
diameter of the cam is 50 mm.
Chapter 3 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Everything About COMBINED LOADING in 10 Minutes! Mechanics of Materials; Author: Less Boring Lectures;https://www.youtube.com/watch?v=N-PlI900hSg;License: Standard youtube license