Using the generalized mixed variational principle (GMVP) of elastic mechanics, GMVP of Reissner plates is derived, and generalized mixed finite elements method (GMFEM) of Reissner plates is established too. The numerical examples show that the stiffness of GMFEM could be changed, and show that GMFEM could be used in analyzing Reissner plates and thin plates at the same times and no locking occurs. The cause why GMFEM can conquer locking phenomenon is discussed. |