PROBLEM 1. A hollow cylindrical steel shaft is 1.5 m long and has inner and outer diameters respectively equal to 40 and 60 mm. a) What is the largest torque that can be applied to the shaft if the shearing stress is not to exceed 120 MPa? b) What torque should be applied to the end of the shaft to produce an angle of twist of 2 degrees? Modulus of rigidity of 60 mn 40 mm steel is 77 GPa. 1.5 m

PROBLEM 1. A hollow cylindrical steel shaft is 1.5 m long and has inner and outer diameters respectively equal to 40 and 60 mm. a) What is the largest torque that can be applied to the shaft if the shearing stress is not to exceed 120 MPa? b) What torque should be applied to the end of the shaft to produce an angle of twist of 2 degrees? Modulus of rigidity of 60 mn 40 mm steel is 77 GPa. 1.5 m

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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A steel shaft can be manufactured as a circular rod with a solid body or a circular tube. The shaft is required to bear a torsion moment of 1200 N.m. The shear safety stress for the shaft material is 40 MPa, the largest permitted unit torsion angle in the bar is 0.75º/m. The shear modulus of steel is G=78 GPa. a) Find the required diameter d0 for a solid circle shaft. b) Find the required outer diameter d2 for a ring-section shaft with a thickness in tenths of the outer diameter. c) Find the diameter ratio (d2/d0 ratio) and the weight ratio for ring cross section and solid section shafts.
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