P5.13 The steel bolt and anchor assembly is used to reinforce the roof of a passageway in an underground coal mine (Figure P5.13). In installation, the bolt is tensioned to 22 kN. Calculate the stress, strain, and extension of the bolt if it is formed from 1045 steel alloy. Coal seám Passageway 850 mm 15 mm Roof line

P5.13 The steel bolt and anchor assembly is used to reinforce the roof of a passageway in an underground coal mine (Figure P5.13). In installation, the bolt is tensioned to 22 kN. Calculate the stress, strain, and extension of the bolt if it is formed from 1045 steel alloy. Coal seám Passageway 850 mm 15 mm Roof line

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

P5.13
The steel bolt and anchor assembly is used to reinforce the roof of a passageway
in an underground coal mine (Figure P5.13). In installation, the bolt is tensioned
to 22 kN. Calculate the stress, strain, and extension of the bolt if it is formed
from 1045 steel alloy.
Coal
seam
Passageway
850 mm
15 min
Roof line

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