7. A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of S kN. Find the diameter of bolt required according to Maximum principal stress theory; b. a. Maximum shear stress theory; Maximum principal strain theory: C. d. Maximum strain energy theory; and Max imum distortion energy theory. e. Take permissible tensile stress at elastic limit = 100 MPa and poisson's ratio -0.3

7. A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of S kN. Find the diameter of bolt required according to Maximum principal stress theory; b. a. Maximum shear stress theory; Maximum principal strain theory: C. d. Maximum strain energy theory; and Max imum distortion energy theory. e. Take permissible tensile stress at elastic limit = 100 MPa and poisson's ratio -0.3

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

7. A shaft subjected to bending moment varying from -200 N m to +s00 N m and a varying torque
from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch
sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The
load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of S kN. Find
the diameter of bolt required according to
Max imum principal stress theory;
Max imum shear stress theory:
Maximum principal strain theory:
Maximum strain energy theory; and
Max imum distortion energy theory.
a.
b.
c.
d.
e.
Take permissible tensile stress at elastic limit - 100 MPa and poisson's ratio - 0.3

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