Q: A helical compression spring is to exert a force of 35.6 N when compressed to a length of 44.45mm. At a length of 31.75 mm, the force must be 53.38 N. The spring will be installed in a machinethat cycles slowly, and approximately 200 000 cycles total are expected. The spring made from ASTMA231 with G =77.2 GPa. Spring wire diameter is 1.4 mm. Spring mean diameter is 15.24 mm. Springhas square and ground ends.Requirements:1. Spring rate.2. Spring indexFree length.Outer diameter, inside diameter.Number of active coil.3.4.5.Pitch and pitch angle.Shear stress at operation condition and check if it's satisfactory or not.Solid length.Force required to compresses the spring to solid length.10. Shear stress at solid condition and check if it's satisfactory or not.11. Check if spring tends to buckling or not.6.7.8.9.

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Answered: Spring rate. Spring index 3. 1. 2. Free…

Engineering

Mechanical Engineering

Spring rate. Spring index 3. 1. 2. Free length.

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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Question

Q: A helical compression spring is to exert a force of 35.6 N when compressed to a length of 44.45
mm. At a length of 31.75 mm, the force must be 53.38 N. The spring will be installed in a machine
that cycles slowly, and approximately 200 000 cycles total are expected. The spring made from ASTM
A231 with G =77.2 GPa. Spring wire diameter is 1.4 mm. Spring mean diameter is 15.24 mm. Spring
has square and ground ends.
Requirements:
1. Spring rate.
2. Spring index
Free length.
Outer diameter, inside diameter.
Number of active coil.
3.
4.
5.
Pitch and pitch angle.
Shear stress at operation condition and check if it's satisfactory or not.
Solid length.
Force required to compresses the spring to solid length.
10. Shear stress at solid condition and check if it's satisfactory or not.
11. Check if spring tends to buckling or not.
6.
7.
8.
9.

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