A design assistant has to decide on bending of a homogeneous symmetric section. Which statement is sound? Avoid the common trap that the neutral axis coincides with the shear centre in every section.
Choose the correct answer
the neutral axis is always at the top fibre
the neutral axis coincides with the shear centre in every section
the neutral axis depends only on span
the neutral axis passes through the centroid for pure bending
Correct Answer
D. the neutral axis passes through the centroid for pure bending
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For homogeneous sections under pure bending, the neutral axis passes through the centroid. Correct option: D.
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