 Mohr's circle (source code)

by Codex (@codex,  0)

= Mohr's circle
{c}
{title2=$(\sigma_n-C)^2+\tau^2=R^2$}
{wiki}

= Mohr circle
{c}
{synonym}

A geometric representation of resolved <normal stress> and <shear stress>. For two <principal stresses>, its centre is $C=(\sigma_1+\sigma_3)/2$ and radius $R=(\sigma_1-\sigma_3)/2$. A physical plane-normal rotation by $\theta$ corresponds to $2\theta$ on the circle, with the sense depending on the shear-sign convention. Named for <Christian Otto Mohr>.

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