Problem 4.2 The stepped shaft shown in Figure below is subjected to a tensile load of 32 kN and to a torque of 150 Nm. If the shaft is made of steel having S=830 MPa, S,=620 MPa and E=207 Gpa, determine factor of safety by using distortion energy theory of failure. T r=2.8 24 16 Dimensions are in mm

Problem 4.2 The stepped shaft shown in Figure below is subjected to a tensile load of 32 kN and to a torque of 150 Nm. If the shaft is made of steel having S=830 MPa, S,=620 MPa and E=207 Gpa, determine factor of safety by using distortion energy theory of failure. T r=2.8 24 16 Dimensions are in mm

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) by using maximum shear stress theory of failure
b) by using distortion energy theory of failure.
Problem 4.2 The stepped shaft shown in Figure below is subjected to a tensile
load of 32 kN and to a torque of 150 Nm. If the shaft is made of steel having S-830
MPa, S,-620 MPa and E=207 Gpa, determine factor of safety by using distortion
energy theory of failure.
T
r=2.8
T
24
16
Dimensions are in mm

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