Q6/ A helical square section spring is set inside another, the outer spring having a freelength of 35 mm greater than the inner spring. The dimensions of each spring are asfollows:Mean diameter (mm)Side of square section (mm)Active turnsOuterInnerSpringSpring12070872015Determine the (1) Maximum deflection of the two springs and (2) Equivalent springrate of the two springs after sufficient load has been applied to deflect the outerspring 60 mm. Use G = 83 GN/m².

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Answered: Q6/ A helical square section spring is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Problem 1.1MA

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The material is a spring wire has a shear modulus of 1.2 x 107 lbf/in2. The maximum allowable stress under design conditions is 50,000 lbf/in2. The spring index is 7. Assume the maximum stress is experienced when a 700 lbm objects falls from a height of 46 in above the tip of the spring, impacts squarely on the spring, and deflects the spring 10 in. Determie: 1. The minimum wire diameter is most nearly A. 0.58 in B. 0.88 in C. 1.4 in D. 1.8 in 2. The mean coil diameter is most nearly A. 8.6 in B. 10 in C. 13 in D. 16 in 3. The number of active coils is most nearly A. 8 B. 11 C. 12 D. 14
Please answer the question clearly, stating how you chose the formulas and what each variable represents. Thank you!
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1. Design a compression helical spring to carry a load of 500 N with a deflection of 25 mm. The spring index may be taken as 8. Assume the following values for the spring material: Permissible shear stress = 350 MPa Modulus of rigidity = 84 kN/mm2 4С - 1 0.615 Wahl's factor where C-spring index. 4С - 4
A helical compression spring is required for a mechanism under static loading with a maximum force of 1250N. The deflection caused by this load is 30mm the ends are squared and ground. The spring has an index of 6 and is made of cold drawn steel wire with tensile strength of 1090 N/mm and modulus of rigidity of 81370 N/mm2. The permissible shear strength is taken as 50% of the ultimate tensile strength. Design the spring and calculate: (a) The wire diameter (b) Mean coil diameter. (c) Number of active coils (d) Total number of coils (e) Free length of the spring (f) Pitch of the coil
A helical compression spring is used to absorb heavy vibrations. Apply mechanical engineering design theory and by using the values given in the table below, (i) Calculate the force applied on the spring. (ii) Determine the number of turns. (iii) Determine the spring stiffness. (iv) Calculate the free length. 5 maiks (v) Would you recommend to increase the number of turns and free length of the spring for this application ? Why? (answer in one/two sentences only). Spring data Туре Helical squared and ground ends Initial Compression of spring 30 mm 80 mm Further Compression of spring after applying heavy load Shear Stress Modulus of rigidity 750 N/mm2 82000 MPa Wire diameter 8 mm Spring Index
2. Determine the possible range for R is the equivalent spring stiffness constant varies from 50 N/m to 500 N/m 15 KN/m ww Anwer: 20 points 750 N/m
MULTIPLE CHOICE -The answer is one of the options below please solve carefully and circle the correct option Please write clear .
TOPIC: Machine Design Multiple choice Note: Please also provide a solution that proves the correct answer.
B- For the spring system given in Fig. B, Model the problem using Combine 14 element in ANSYS Mechanical APDL software, (With Screen Capture Step by Step) then, answer these questions: (Ki=1000 N/mm, K2= K4 = 500 N/mm, K=400 N/mm) (Fi=100 N, Fz=120 N). 1- Describe the element type that you used in the model. 2- Solve for the nodal displacements. 3- Solve for the reaction forces. ki 2 k2 F2 k3 www-wwwm 3 3 5 Fig. B
s 1c
Consider four springs with spring constants k1= 20N/m, K2=50 N/m, K3-100 N/m, K4=200 N/m, What is the equivalent spring constant if K234 are in parallel and with K1 in series. O 128.95 N/m O285.35 N/m O 370 N/m O 18.92 N/m

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