motor. The torque of the spindle is transferred to a wheat mill (not shown!) with the help of the “C” belt pulley mechanism. According to this; a) Max. Calculate the bending stress and location? b) Calculate the maximum

motor. The torque of the spindle is transferred to a wheat mill (not shown!) with the help of the “C” belt pulley mechanism. According to this; a) Max. Calculate the bending stress and location? b) Calculate the maximum

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 17RQ: Convert 22C to Fahrenheit.

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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

The figure on the right shows a shaft (Ç1040, Sut=500MPa) housed with “A” and “B” bearings. Said shaft is driven by an electric motor. The torque of the spindle is transferred to a wheat mill (not shown!) with the help of the “C” belt pulley mechanism. According to this; a) Max. Calculate the bending stress and location? b) Calculate the maximum torsional stress and location in the shaft? c) Calculate the safety factor of the shaft against static damage according to the Tresca and von Mises criteria?

175 mm
75 mm
+5000 N
/C) 1000 N
B
A
C DKasnak=150 mm
DMI=25 mm
МОTOR

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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