Beam Deflection

Calculate the maximum deflection of a simply supported beam.

Load Type

Load (N or N/m)

Span Length (m)

Young's Modulus E (GPa)

Second Moment of Area I (cm⁴)

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Maximum mid-span deflection of a simply supported beam: δ = PL³ ÷ 48EI for a central point load, or 5wL⁴ ÷ 384EI for a uniformly distributed load.