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Variational principles of bending problems of thin plates

He Ji-Huan

Archives of Mechanics

2001

Vol. 53, nr 6

631-642

In this paper, via the semi-inverse method proposed previously by the present author, a family of variational principles of bending problems of plates is derived directly from their governing equations and boundary conditions, without using the Lagrange multiplier method. In this method, an energy-like trial functional is constructed with a certain unknown function, which can be identified step by step. A new generalized variational principle is obtained.