A safety valve, 11 mm in diameter, is to blow off at a pressure of 1.5 MPa. It is held on its seat by means of a helical compression spring, with initial compression of 16 mm. The maximum lift of the valve is 27 mm. The ratio of mean coil diameter to wire diameter is 5. The spring is made of cold drawn steel wire with ultimate tensile strength of 1400 MPa. (G = 81 370 N/mm2), Calculate: i. Wire diameter; ii. Mean coil diameter iii. Number of active coils

A safety valve, 11 mm in diameter, is to blow off at a pressure of 1.5 MPa. It is held on its seat by means of a helical compression spring, with initial compression of 16 mm. The maximum lift of the valve is 27 mm. The ratio of mean coil diameter to wire diameter is 5. The spring is made of cold drawn steel wire with ultimate tensile strength of 1400 MPa. (G = 81 370 N/mm2), Calculate: i. Wire diameter; ii. Mean coil diameter iii. Number of active coils

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.8.12P: A bungee jumper having a mass of 55 kg leaps from a bridge, braking her fall with a long elastic...

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