Huber's equation

Huber's equation, first derived by a Polish engineer Tytus Maksymilian Huber, is a basic formula in elastic material tension calculations, an equivalent of the equation of state, but applying to solids. In most simple expression and commonly in use it looks like this:

$sigma\_\{red\}=sqrt\{(\{sigma\}^2)\; +\; 3(\{\; au\}^2)\}$

where $sigma$ is the tensile stress, and $au$ is the sheer stress, measured in newtons per square meter (N/m², also called pascals, Pa), while $sigma\_\{red\}$ - called a reduced tension, is the resultant tension of the material.

Very useful in calculating the span width of the bridges like Golden Gate Bridge or Verrazano-Narrows Bridge, their beam crosssections, etc.

ee also

* Yield surface
* Stress energy tensor
* Tensile stress