Shear force and bending moment in the two-support beam

The calculator draws shear force and bending moment diagrams for a simple beam under the specified load.

Distance between supports, m

Distance to the support A	Load	Value	Direction	Moment direction	Range
-1	Equally distributed load, kN/m	20	Downward		4.5
4.5	Force, kN	30	Upward
4.5	Equally distributed load, kN/m	15	Downward		3
7.5	Moment, kN*m	25		Anticlockwise

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Calculation precision

Digits after the decimal point: 2

Shear force and bending moment diagrams

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Shear force

Bending moment

Diagram : Shear force

Diagram : Bending moment

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Section start	Section end	Shear force formula	Bending moment formula
-1	0	$-20x-20$	$-10x^{2}-20x-10$
0	3.5	$-20x+47.92$	$-10x^{2}+47.92x-10$
3.5	4.5	$-22.08$	$-22.08x+112.5$
4.5	6	$-15x+75.42$	$-7.5x^{2}+75.42x-174.37$
6	7.5	$-15x+112.5$	$-7.5x^{2}+112.5x-396.88$
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PLANETCALC, Shear force and bending moment in the two-support beam

Anton4 years ago

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