A dissipated energy maximization approach to elastic-perfectly plastic analysis of planar frames

• Autorzy: Mahini M. R. , Moharrami H. , Cocchetti G.
• Języki publikacji: EN

Abstrakty

EN

The optimization approaches, known as powerful tools in nonlinear analysis of structures, are considered in this paper for further development. Adopting linear kinematics, proportional loading, lumped plasticity, piecewise-linear yield loci, perfect plasticity and associated flow rule as the basic assumptions, the nonlinear analysis of a framed structure is formulated in the form of a mathematical programming problem. Dissipated energy is considered as the objective function and is maximized using the conventional simplex method with special provisions to obtain exact structural responses. The proposed algorithm is validated and outlined using several numerical examples taken from the literature.

Słowa kluczowe

EN

frame nonlinear analysis; perfect plasticity; mathematical programming piecewise-linear models; lumped plasticity

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2013
• Tom: Vol. 65, nr 3
• Strony: 171--194
• Opis fizyczny: Bibliogr. 21 poz., rys., wykr.

Twórcy

autor

Mahini M. R.

• Department of Structural Engineering, Tarbiat Modares University, 14115-397 Tehran, Iran

autor

Moharrami H.

• Department of Structural Engineering, Tarbiat Modares University, 14115-397 Tehran, Iran

autor

Cocchetti G.

• Department of Structural Engineering, Technical University (Politecnico) of Milan, Piazza L. da Vinci, 32-20133 Milan, Italy

Bibliografia

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