This
free online
Bending
Moment calculator is developed to provide a software tool for calculation
of
bending moment and shear force at any section of simply supported beam (without
overhangs) subjected to
point load, uniformly distributed load, varying load and applied moments on the span or
supports.This calculator uses equations of static equilibrium to
determine the reactions at the supports and then determines the
values of shear force and bending moment at the required section. It also calculates maximum value of bending moment and the
point of maximum bending moment which are based on bending moment
equation for the loading case.
**Instructions for using Bending Moment Calculator**
(i). *Sign convention *
The loads acting
upward are considered as positive while the downward loads are taken
as negative. Sagging bending moment is
taken as positive and hogging as negative. The clock-wise moments
are negative and anticlock-wise
as positive.
(ii) All the distances should be measured with
reference to the origin of axes which is taken at the extreme left
end of the beam. All the distances should be entered in meter and load in kN.
It will give the values of BM in kNm and SF in kN.
While applying the load, keep in mind that the load should not be
outside the span of the beam.
(iii) You can also quickly get the Bending Moment values
at different sections of the beam, just by changing the position of
section "x". But keep in mind that the value of "x" should
not be more than span of beam.
(iv) In case of more than one load, take the sum of the
results of all the cases (using principle of superposition). Calculated values can be used to plot the
bending moment diagram.
(v) This calculator can also be used to find the
ordinates of
influence line diagram for
structures. |