Shear strain
= Shear strain
{title2=$\gamma_{xy}=2\varepsilon_{xy}$}
Engineering <shear strain> is the first-order change of the right <angle> between material lines initially directed along two perpendicular axes. For a displacement $\mathbf u$, $\gamma_{xy}=\partial_yu_x+\partial_xu_y=2\varepsilon_{xy}$, where $\varepsilon_{xy}$ is the tensor <strain> component. Slender <Euler-Bernoulli beam equation> models neglect the transverse <shear strain> contribution to deflection.