1. Experiment 13
Spring

2. Compression spring

4. Another design factors: total coils, free length, solid height.

5. Stress in the spring wire

7. Clearance is 0.015in

9. 1.12

15. Buckling

16. Extensional spring

17. Typical maximum value of Si

24. Natural frequency calculation of a spring mass system
(the mass of the spring is assumed to be negligible)

28. Practice 1
A spring of a suspension system of a motorcycle is required a spring constant of 100N/mm. The max. deflection of the spring is 50mm. Try to design the spring.

29. Practice 2
A hard disk is put in a vibration environment of frequency of 5Hz (assume that only in virtical direction). Try to find the spring constant of the springs and design a steel spring for this system.

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