Shear strain rate is given by
1
\(\frac{1}{2}\left(\frac{\partial u}{\partial x} + \frac{\partial v}{\partial y}\right)\)
2
\(\frac{1}{2}\left(\frac{\partial v}{\partial x} + \frac{\partial u}{\partial y}\right)\)
3
\(\frac{1}{2}\frac{\partial u}{\partial x} + \frac{\partial v}{\partial y}\)
4
\(\frac{1}{2} \frac{\partial v}{\partial x} + \frac{\partial u}{\partial y}\)