The bumper springs of a railway carriage are to be made of square section wire. The ratio of mean diameter of spring to the side of wire is nearly equal to 6. Two such springs are required to bring to rest a carriage weighing 20 kN moving with a velocity of I.5 m/s with a maximum deflection of 200 mm. Design the spring if the allowable shear stress is not to exced 300 MPa and G=84 kN/mm2. 2.4 W.D 5.59 W.D'n For square wire, ; and & = GA Side of the wire section, where D = Mean diameter, Number of coils, and H = Load on each spring.

The bumper springs of a railway carriage are to be made of square section wire. The ratio of mean diameter of spring to the side of wire is nearly equal to 6. Two such springs are required to bring to rest a carriage weighing 20 kN moving with a velocity of I.5 m/s with a maximum deflection of 200 mm. Design the spring if the allowable shear stress is not to exced 300 MPa and G=84 kN/mm2. 2.4 W.D 5.59 W.D'n For square wire, ; and & = GA Side of the wire section, where D = Mean diameter, Number of coils, and H = Load on each spring.

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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