10-26 A static service music wire helical compression spring is needed to support a 20-l load after being compressed 2 i

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10 26 A Static Service Music Wire Helical Compression Spring Is Needed To Support A 20 L Load After Being Compressed 2 I 1 (117.83 KiB) Viewed 30 times

10-26 A static service music wire helical compression spring is needed to support a 20-l load after being compressed 2 in. The solid height of the spring cannot exceed 1 The free length must not exceed 4 in. The static factor of safety must equal or exceed 1.2. For robust linearity use a fractional overrun to closure of 0.15. There are two springs to be designed. Start with a wire diameter of 0.075 in. (a) The spring must operate over a -in rod. A 0.050-in diametral clearance allowance should be adequate to avoid interference between the rod and the spring due out-of-round coils. Design the spring. (b) The spring must operate in a 1-in-diameter hole. A 0.050-in diametral clearance allowance should be adequate to avoid interference between the spring and the hole due to swelling of the spring diameter as the spring is compressed and out- of-round coils. Design the spring.