# Bending stress distribution in curved beams

Q.  Which of the following statements is/are true?
- Published on 14 Sep 15

a. The bending stress distribution in bending of straight beams is nonlinear
b. The bending stress distribution in bending of curved beams is hyperbolic
c. The neutral axis coincides with geometrical axis during bending of curved beams
d. All of the above

ANSWER: The bending stress distribution in bending of curved beams is hyperbolic

#### Discussion

• touseef   -Posted on 09 Jan 17
Why does neutral axis shifts towards the center of curvature in case of curved beams?
• Sravanthi   -Posted on 30 Oct 15
1) Straight beams:

- Bending stress distribution is linear in bending of straight beams.

- The neutral axis coincides with geometrical axis during bending of straight beams

- Stress and strains induced in a fiber, are same in magnitude when subjected to bending moment.

2) Curved beams:

- Bending stress distribution is non-linear and hyperbolic in bending of curved beams.

- The neutral axis does not coincide with the centroidal axis during bending of straight beams.

- The neutral axis shifts towards the centre of curvature.

- The length of inside fiber in a curved bream is shorter than outside fibers. Hence, the stress and strain induced in inside fibers is greater than outside fibers.

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