Answered: M-2000 Ncm 500 Ncm M-800 Nem M300 Ncm…

Engineering

Mechanical Engineering

M-2000 Ncm 500 Ncm M-800 Nem M300 Ncm M-400 Ncm A B- L-20cm M.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.2.15P: Repeat Problem 11.2-14 using L = 12 ft, ß = 0.25 kips/in., ßRl= 1.5ßL2, and ßR2= 2 ßR1.

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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

100%

In the figure, there is a steel shaft where moment is applied from the C point. The modulus of elasticity of this shaft is 210 GPa and its shear modulus is 80 GPa. The material of the shaft is Ç1010 and the yield stress is 240 MPa.Find the shaft diameters Dab, Dbc, Dcd, Dde and the torsion angle between A and E according to the Vonmises hypothesis by taking the safety coefficient as 2

M-2000 Ncm
500 Ncm
M=B00 Ncm
M300 Ncm
M-400 Ncm
= 2400 dN/cm²
Yield
n=2
A
B-
d yield
= 1200 dN/cm2
L-20cm
safety
72
Vonmisses
= 0,577 - a safety = 632,4 dN/cm²
safety

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