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When we find out the deflection of beam, the factors considered are its geometry (moment of inertia) and young's modulus (E) of the material. As per text Hook's law 'E' is constant only till the elastic limit of the material. Assuming that the stress induced crosses the elastic limit, 'E' is no more valid. How do we take this effect in the calculation, if the stress is above elastic limit? Thanks.

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# Deflection of beam after reaching elastic limit

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