A motor applies 360 lb-ft of torque which is transferred through gears to shaft BD. At gear C the removed torque is Tc = 500 lb-ft. The shaft between the motor and gear A is 30". All shafts are solid steel with a 1.5" diameter and G = 12,000 ksi. Determine a) The gear tooth force between A and B Ans: 1080 lb b) The torque removed at D c) The maximum overall shear stress in the shafts Ans: 400 lb-ft d) The angle of rotation of gear D with respect to the motor 60 in. 40 in. 10-in. diameter Tc B Tp (1) 4-in. diameter

A motor applies 360 lb-ft of torque which is transferred through gears to shaft BD. At gear C the removed torque is Tc = 500 lb-ft. The shaft between the motor and gear A is 30". All shafts are solid steel with a 1.5" diameter and G = 12,000 ksi. Determine a) The gear tooth force between A and B Ans: 1080 lb b) The torque removed at D c) The maximum overall shear stress in the shafts Ans: 400 lb-ft d) The angle of rotation of gear D with respect to the motor 60 in. 40 in. 10-in. diameter Tc B Tp (1) 4-in. diameter

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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Concept explainers

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.

Question

A motor applies 360 lb-ft of torque which is transferred through gears to shaft BD. At gear C the removed
torque is Tc = 500 lb-ft. The shaft between the motor and gear A is 30". All shafts are solid steel with a 1.5"
diameter and G = 12,000 ksi. Determine
a) The gear tooth force between A and B Ans: 1080 lb
b) The torque removed at D
c) The maximum overall shear stress in the shafts
•d) The angle of rotation of gear D with respect to the motor
Ans: 400 lb-ft
60 in.
40 in.
10-in, diameter
Tc
B
Tp
(1)
(2)
4-in. diameter

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