1. A flanged bolt coupling consists of eight 12 – mm diameter steel bolts on a bolt circle of 300mm in diameter and six 10 – mm diameter steel bolts on a concentric bolt circle of 200mm in diameter, as shown in the figure. What torque can be applied without exceeding a shearing stress of 55 MPa in the bolts. 150mm 100mm Figure 3.6.2

1. A flanged bolt coupling consists of eight 12 – mm diameter steel bolts on a bolt circle of 300mm in diameter and six 10 – mm diameter steel bolts on a concentric bolt circle of 200mm in diameter, as shown in the figure. What torque can be applied without exceeding a shearing stress of 55 MPa in the bolts. 150mm 100mm Figure 3.6.2

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

1. A flanged bolt coupling consists of eight 12 – mm diameter steel bolts on a bolt
circle of 300mm in diameter and six 10 – mm diameter steel bolts on a concentric
bolt circle of 200mm in diameter, ss shown in the figure. What torque can be spplied
without exceeding a shearing stress of 55 MPa in the bolts.
150mm
100mm
Figure 3.6.2
2. A torque of 6500 ib. ft is to be carried by a flanged bolt coupling that consists of
eight - in. diameter steel bolts on a bolt circle of diameter 12 - in. and six -
in. diameter steel bolts on a bolt circle of diameter 9 - in. Detemine the shearing
stress in the bolts.
9 in.
12 in.
Figure 3.6.3

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