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Stress distribution in simple bending of beams Under the assumptions of simple (Euler–Bernoulli) bending, how does normal bending stress vary from the neutral axis to the outer fibers? Choose the correct variation.

Q: Stress distribution in simple bending of beams Under the assumptions of simple (Euler–Bernoulli) bending, how does normal bending stress vary from the neutral axis to the outer fibers? Choose the correct variation.

Concept From σ = M y / I, the bending stress is proportional to distance y from the neutral axis. Hence it varies linearly, zero at the NA and maximum at the extreme fibers. Final Answer linearly

Difficulty: Easy

linearly
parabolically
hyperbolically
elliptically

Correct Answer: linearly

Explanation:

Concept
From σ = M y / I, the bending stress is proportional to distance y from the neutral axis. Hence it varies linearly, zero at the NA and maximum at the extreme fibers.

Final Answer
linearly

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