10-25 After determining the wire diameter in Problem 10-24. determine what the spring index should be to maintain a design factor of 1.2 at closure. For this design, specify the wire diameter, the inside and outside diameters of the coil, the spring rate, the total number of coils, the free length of the spring, the final factor of safety, and stability conditions. 10-26 Page 570 A static service music wire helical compression spring is needed to support a 20-lbf load after being compressed 2 in. The solid height of the spring cannot exceed 14 in. 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 1-in rod. A 0.050-in diametral clearance allowance should be adequate to avoid interference between the rod and the spring due to 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. 10-27 Solve Problem 10-26 by iterating with an initial value of C=10. If you have already solved Problem 10-26, compare the steps and the results.
10-25 After determining the wire diameter in Problem 10-24. determine what the spring index should be to maintain a design factor of 1.2 at closure. For this design, specify the wire diameter, the inside and outside diameters of the coil, the spring rate, the total number of coils, the free length of the spring, the final factor of safety, and stability conditions. 10-26 Page 570 A static service music wire helical compression spring is needed to support a 20-lbf load after being compressed 2 in. The solid height of the spring cannot exceed 14 in. 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 1-in rod. A 0.050-in diametral clearance allowance should be adequate to avoid interference between the rod and the spring due to 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. 10-27 Solve Problem 10-26 by iterating with an initial value of C=10. If you have already solved Problem 10-26, compare the steps and the results.
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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Please solve question 10-26 part B using the attached picture below. Thank You!
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