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For a helical torsion sprig, the stress concentration factor at outer fibre is? Give spring index=5.

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ago in Machine Design by (89.5k points)
For a helical torsion sprig, the stress concentration factor at outer fibre is? Give spring index=5.

(a) 0.78

(b) 0.87

(c) 1.87

(d) 0.69

This question requires clarification and I found it in my class test.

This theoretical question is from the Concentric & Spiral Springs module in part Springs of Machine Design

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