Forças de corte de acordo com Kirchhoff

v_{x} = - \frac{E \cdot h^{3}}{12 \cdot (1 - μ^{2})} \cdot (\frac{\partial^{3} w}{\partial x^{3}} \frac{\partial^{3} w}{\partial x \partial y^{2}})

v_{y} = - \frac{E \cdot h^{3}}{12 \cdot (1 - μ^{2})} \cdot (\frac{\partial^{3} w}{\partial y^{3}} \frac{\partial^{3} w}{\partial x^{2} \partial y})

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