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Stifness operator for boundary problems of structural analysis and several new variational formulations

Zolotov A. B., Sidorov V. N., Akimov P. A., Mozgaleva M. L.

Structure and Environment

2010

Vol. 2, no. 2

9-13

So-called "stiffness operator" for boundary problems of structural analysis is introduced in the distinctive paper. There is a direct analogy between this stiffness operator and corresponding stiffness matrix of the considering structure in terms of finite element method. Namely we can consider stiffness operator as a limiting (continual) generalization of stiffness matrix. The explicit formulation of stiffness operator is presented. Several new variational formulations are discussed as well.