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The conservation energy principle in description of stable and unstable states for aluminium
Author(s) -
Wegner T.,
Kurpisz D.
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910135
Subject(s) - division (mathematics) , aluminium , conservation of energy , energy (signal processing) , energy conservation , conservation law , stability (learning theory) , free energy principle , strain energy , function (biology) , basis (linear algebra) , mechanics , classical mechanics , mathematics , structural engineering , engineering , materials science , mathematical analysis , physics , computer science , thermodynamics , finite element method , geometry , metallurgy , statistics , arithmetic , machine learning , electrical engineering , evolutionary biology , biology
Abstract In the paper the physical model based on the energy conservation principle is proposed. On the basis of this principle the division of energy on volumetric and deviatory parts is presented. In this model a concept of energy division is recognised as important. Using the strain energy density function we can formulate criteria of the material equilibrium stability. Considerations are carried out for aluminium. All assumptions are based on uniaxial tension test supported by transverse deformation measurements. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)