Structural Engineering & Statics
where the load goes
Ladder

Curved beam — the ladder

One essay so far against this idea. A ladder is the distinct arguments that stand against one idea, and this one has room to grow.
  1. the cutcentre of curvatureN = 50 kNR = 79.70 mmr_i = 50r_o = 120My/I248.7 N/mm²r = 75.04centroid 79.70free body: everything below the cut, so the face carries N = 50 kN and M = N·R = 3.985 kN·m248.7 N/mm² of tension inside against 140.6 of compression outside, on a neutral axis 4.65 mm off the centroid

    The bar that was bent before it was loaded

    In a curved bar plane sections still stay plane, and the bending formula is wrong anyway. The fibres were different lengths before anything was applied, so an equal rotation of two plane faces produces unequal strain — the stress is a hyperbola, the neutral axis has moved inward, and a crane hook carries half as much again as My/I reports.

    rung 1 · sections

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