section modulus

section modulus

[′sek·shən ′mäj·ə·ləs]
(mechanics)
The ratio of the moment of inertia of the cross section of a beam undergoing flexure to the greatest distance of an element of the beam from the neutral axis.

section modulus

The moment of inertia of the area of the cross section of a structural member divided by the distance from the center of gravity to the farthest point of the section; a measure of the flexural strength of the beam.
References in periodicals archive ?
Curtis and Hendrick (1969) determined that the section modulus in bending varied with the third power of the diameter for cotton stalks of diameters ranging from 7 to 16 mm.
These results are in reasonable agreement with the reduction in the section modulus of the lumber.
If a mixer shaft and impeller assembly had no fluid hydraulic forces acting at the impeller, it would only be concerned with torsional stress which is the torque transmitted by the shaft divided by its polar section modulus.
For a more precise estimation of the remaining geometrical parameters of a crosssection-a section area, the second moment of the area, section modulus and eccentricities - the section was divided into four parts (see Fig.
It depends on time, cross-section dimensions and cross-section properties (area, section modulus or second moment of area).
Therefore, the transformation takes place at different times in sections of differing section modulus.
The stress values can be computed easily by dividing the maximum bending moment to the beam section modulus.
The researchers used hip structural analysis to calculate several measures of bone geometry, including the outer diameter, the bone cross-sectional area, the section modulus (an indicator of bending strength), the estimated mean cortical thickness, and the estimated buckling ratio (an estimate of cortical stability in buckling) from DXA hip scans.
The researchers observed a 9% difference in mean bone cross-sectional area and section modulus (indicators of axial and bending strength) between the least and most active children in the study.
These section properties include area, moment of inertia, section modulus, center of gravity, shear center, and torsional constants.
Focus on frame specifications, Robert stated, by looking at the section modulus - an indication of the quantity of steel in the rails - and the RBM rating.
In the design of structures to resist snow-pack loading it is worthwhile to consider members that have the same section modulus (S) in both horizontal and vertical directions, such as pipe or square tubing.