A steel shaft is transmitting 55 hp at 1200 rpm. The nature of the load and the type of service of the shaft is such that the allowance shearing stress based on the pure tension is 4000 psi. (MAXIMUM TORSIONAL STRESS AND ANGLE OF TWIST FOR A SOLID SHAFT) Calculate the diameter of the shaft to the nearest commercial size of the shafting. 2.Calculate the torsional deflection of the shaft in degree for one foot length of the shaft

A steel shaft is transmitting 55 hp at 1200 rpm. The nature of the load and the type of service of the shaft is such that the allowance shearing stress based on the pure tension is 4000 psi. (MAXIMUM TORSIONAL STRESS AND ANGLE OF TWIST FOR A SOLID SHAFT) Calculate the diameter of the shaft to the nearest commercial size of the shafting. 2.Calculate the torsional deflection of the shaft in degree for one foot length of the shaft

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.3P: A motor driving a solid circular steel shaft with diameter d = 1.5 in, transmits 50 hp to a gear at...

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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 steel shaft is transmitting 55 hp at 1200

rpm. The nature of the load and the type

of service of the shaft is such that the

allowance shearing stress based on the

pure tension is 4000 psi. (MAXIMUM

TORSIONAL STRESS AND ANGLE OF TWIST

FOR A SOLID SHAFT)

Calculate the diameter of the shaft to

the nearest commercial size of the

shafting.

2.Calculate the torsional deflection of the

shaft in degree for one foot length of

the shaft.

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