Answered: Find the diameter of four bolts a…

Find the diameter of four bolts a flange coupling to transmit 63.5 kW at 240 r.p.m. Diameter of bolt circle is 200 mm the safe shear stress is 32 Mpa.

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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H.W: Design a cast iron rigid type flange coupling to transmit 20 kW at 900 r.p.m. from an electric motor to a compressor. The following permissible stresses may be used: Shear stress for shaft, bolt and key material =40 MPa Crushing stress for bolt and key = 80 MPa %3D Shear stress for cast iron =8 MPa Draw a neat sketch of the coupling.
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Pls give right answer with step by step explanation. Design a clamp coupling for a shaft diameter of 60 mm. The torsional moment to be transmitted by this coupling taking in to account over loading as 160 N-m. The number of bolts used are 6 and the allowable stress in the material of the bolt is limited to 5N / m * m ^ 2 . The coefficient of friction between the shaft and muff material is 0.25.
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Q-1 Compute the max load (P ) if the stress in steel 120 Mpa and in bronze 70 Мра steel bronze A= 300mm2 E=83 Gpa 900mm2 E=200 Gpa L=4m L=3m 3m 3m 1m In the fig three rivets of 25 mm diameter joins the plates that are each 130 mm wide .The shearsress in the rivet is 80 Mpa and the stresses in the bearing are 120 Mpa . Determine .a)The minimum thickness of each plate .b) the largest average tensile stress in the plate 25mm Ø 130 Q-3 Two solid shafts of different material are rigidly fastened together and attached to rigid supports as shown in fig .Compute the maximum shearing stress developed in the assembly 3 m 2 m aluminium G=83 Gpa steel G=28 Gpa 50 mm dia 25 mm dia T= 2 kN .m
(b)Find the torque required to raise the load of 15kN and mean diameter of triple threaded screw being 46mm. Also gIven pitch = 8mm and coefficient of friction is 0.15?
A flanged bolt coupling consists of six 2-in. steel bolts evenly spaced around a bolt circle 12 in. in diameter, and four 3/4-in. aluminum bolts on a concentric bolt circle 8 in. in diameter. What torque can be applied without exceeding 6000 psi in the steel or 9000 psi in the aluminum? Assume Gst = 12 × 106 psi and Gal = 4 x 106 psi.
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