Beam bending calculator

One point load on a straight beam. Drag the load or change a value.

Beam inputs

Safety factor

of yield

Peak deflection: 0.345 in
Peak location: 24 in from left
Peak bending moment: 12,000 lbf·in
Peak bending stress: 18 ksi
Safety factor vs yield: 2.18

Load position 1.00 L0L/2L

Support

CantileverSimpleFixed

Section

RectangleTubeI-beam

Units

USSI

Material

LengthinLoadlbf

WidthinDepthin

Outside dia.inWallin

Flange widthinFlange thk.inDepthinWeb thk.in

Euler–Bernoulli beam theory. Assumes a straight, slender beam with a constant cross-section, linear-elastic behavior and small deflections; shear deformation is ignored.

Material presets use approximate room-temperature values from Wikipedia's alloy summaries. Properties depend on product form and processing. This is a teaching tool; the presets are not design allowables.

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