The second moment of area is typically denoted with either an. To calculate the area moment of inertia through calculus equation 1 would be used for a general form. The 2nd moment of area, also known as moment of inertia of plane area, area moment of inertia, or second area moment, is a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis. However, there are certain cases where the area moment of inertia will have to be calculated either through calculus or by manipulating the equations found in this table.Īrea Moment if Inertia Calculator Width (b): For basic shapes there are tables that contain area moment of inertia equations which can be viewed below. The moment of inertia of body with the shape of the cross-section is the second moment of this area about the z-axis perpendicular to the cross-section, weighted by its density. It is determined from the cross-sectional area of the beam and the central axis for the direction of interest.
Knowing the area moment of inertia is a critical part of being able to calculate stress on a beam.
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