ⓘ Hu–Washizu principle. In continuum mechanics, and in particular in finite element analysis, the Hu–Washizu principle is a variational principle which says that ..

                                     

ⓘ Hu–Washizu principle

In continuum mechanics, and in particular in finite element analysis, the Hu–Washizu principle is a variational principle which says that the action

∫ V e dV-\int _{S_{\sigma }^{e}}{\bar {T}}^{T}u\ dS}

is stationary, where C {\displaystyle C} is the elastic stiffness tensor. The Hu–Washizu principle is used to develop mixed finite element methods. The principle is named after Hu Haichang and Kyūichirō Washizu.