Meccanica

, Volume 25, Issue 1, pp 26–31 | Cite as

Equivalent dissipation postulates in classical plasticity

  • Massimiliano Lucchesi
  • Paolo Podio-Guidugli
Article
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Summary

In classical plasticity dissipation postulates on cycles, such as those proposed by Drucker, Martin e Il'yushin, rule the evolution of elastic-plastic deformation processes. In this paper, within the framework of the infinitesimal theory of isotropic materials with elastic range of [7], each one of those three postulates is given an equivalent local formulation; moreover, they are shown to be all equivalent.

Keywords

Mechanical Engineer Civil Engineer Deformation Process Isotropic Material Local Formulation 
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Sommario

In plasticitá classica l'evoluzione dei processi elasto-plastici é regolata da postulati di dissipazione su cicli quali quelli proposti da Drucker, Martin e Il'yushin. In questo lavoro, nell'ambito della teoria infinitesima dei materiali isotropi con dominio elastico proposta in [7], si fornisce una formulazione locale equivalent per ciascuno di quei tre postulati e si mostra che essi sono tutti tra loro equivalenti.

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References

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Copyright information

© Pitagora Editrice Bologna 1990

Authors and Affiliations

  • Massimiliano Lucchesi
    • 1
  • Paolo Podio-Guidugli
    • 2
  1. 1.Consiglio Nazionale delle RicercheIstituto CNUCEPisa
  2. 2.Dipartimento di Ingegneria Civile EdileUniversitá di Roma 2Roma

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