Stress
Stress, abbreviated as \(\sigma \) (Greek symbol sigma), is the force per unit area of cross-section. The maximum stress of a material before it breaks is called breaking stress or ultimate tensial stress.
stress formula
\(\large{ \sigma = \frac{F}{A_c} }\) |
Where:
Units | English | Metric |
\(\large{ \sigma }\) (Greek symbol sigma) = stress | \(\large{\frac{lbf}{in^2}}\) | \(\large{MPa}\) |
\(\large{ A_c }\) = area cross-section | \(\large{ ft^2}\) | \(\large{ m^2}\) |
\(\large{ F }\) = force | \(\large{ lbf }\) | \(\large{N}\) |
Solve For:
\(\large{ A_c = \frac{ F }{ \sigma } }\) | |
\(\large{ F = \sigma \; a_c }\) |
Related Stress formulas
\(\large{ \sigma = \lambda \; \epsilon }\) | (elastic modulus) |
\(\large{ \sigma = E \; \epsilon }\) | (Young's modulus) |
Where:
\(\large{ \sigma }\) (Greek symbol sigma) = stress
\(\large{ \lambda }\) (Greek symbol lambda) = elastic modulus
\(\large{ \epsilon }\) (Greek symbol epsilon) = strain
\(\large{ E }\) = Young's modulus
Tags: Equations for Strain and Stress Equations for Soil Equations for Hoop Stress