SOLVED UNIVERSITY QUESTIONS
SOLVED PROBLEM 7.21
A laminated spring of semi-elliptical type has a span of 750 mm and is built up of leaves 8 mm thick and 35 mm wide. How many leaves would be required to carry a central load of 5 kN without the bending stress in the material of the spring exceeding 220 N/mm2. Assume modulus of elasticity of 200 N/mm2 (Anna Univ., May 2006, EEE).
Solution:
Given data: Length, l = 750 mm, load, W = 5 kN and bending stress, f = 220 N/mm2.
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| Bending stress, |  |
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| Solving, | n = 11 | |
| Number of leaves required = ... | ||
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