Q(1) :A helical compression spring is to be cycled between 150 lbf and 300 lbf with a 1-in stroke.The number of cycles is low, so fatigue is not an issue. The coil must fit in a 2.1-in diameter hole with a 0.1-in clearance all the way around the spring. Use unpeened oil tempered wire with squared and ground ends. (CLO1) (i) Determine a suitable wire diameter, using a spring index of C=7. (ii) Determine a suitable mean coil diameter. (iii) Determine the necessary spring constant. (iv) Determine a suitable total number of coils. (v) Determine the necessary free length so that if the spring were compressed to its solid length, there would be no yielding.
Q(1) :A helical compression spring is to be cycled between 150 lbf and 300 lbf with a 1-in stroke.The number of cycles is low, so fatigue is not an issue. The coil must fit in a 2.1-in diameter hole with a 0.1-in clearance all the way around the spring. Use unpeened oil tempered wire with squared and ground ends. (CLO1) (i) Determine a suitable wire diameter, using a spring index of C=7. (ii) Determine a suitable mean coil diameter. (iii) Determine the necessary spring constant. (iv) Determine a suitable total number of coils. (v) Determine the necessary free length so that if the spring were compressed to its solid length, there would be no yielding.
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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Q(1) :A helical compression spring is to be cycled between 150 lbf and 300 lbf with a 1-in stroke.The number of cycles is low, so fatigue is not an issue. The coil must fit in a 2.1-in diameter hole with a 0.1-in clearance all the way around the spring. Use unpeened oil tempered wire with squared and ground ends. (CLO1)
(i) Determine a suitable wire diameter, using a spring index of C=7.
(ii) Determine a suitable mean coil diameter.
(iii) Determine the necessary spring constant.
(iv) Determine a suitable total number of coils.
(v) Determine the necessary free length so that if the spring were compressed to its solid length, there would be no yielding.
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