Beam Bending Stress
Beam bending stress, abbreviated as \(\sigma \) (Greek symbol sigma), also called flexure, is when a beam is subjected to a load along it's length axis with stress applied perpendicular to the axis.
Beam Bending Stress formula |
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\(\large{ \sigma_b = \frac{M \; y}{I} }\) | ||
Symbol | English | Metric |
\(\large{ \sigma_b }\) (Greek symbol sigma) = bending stress | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
\(\large{ M }\) = moment about the neutral axis | \(\large{\frac{lbf}{sec}}\) | \(\large{\frac{kg-m}{s}}\) |
\(\large{ y }\) = perpendicular distance to the neutral axis | \(\large{in}\) | \(\large{mm}\) |
\(\large{ I }\) = second moment of area about the neutral axis (moment of inertia) | \(\large{in^4}\) | \(\large{mm^4}\) |
Tags: Strain and Stress Equations Structural Steel Equations Beam Support Equations Welded Stress and Strain Equations