Meccanica

, Volume 11, Issue 4, pp 227–235 | Cite as

Coupling of elastic and plastic deformations of bulk solids

  • Tomasz Hueckel
Article

Summary

In such solids like rocks, soils, ceramics, grain en masse the plastic deformation strongly aects the current unloading modulus. The consequences of this effect referred to as the elastoplastic coupling both to the elastic and the plastic part of the constitutive law are examined. Particularly, it appears that such phenomenon induces a specific kind of the non-normality in the plastic flow law. The departure from the normality is studied in connection with the form of the elastic modulus variation basing on the notion of a coupling potential.

Keywords

Mechanical Engineer Elastic Modulus Plastic Deformation Civil Engineer Alla 

Sommario

Il modulo di scarico elastico di solidi come le rocce, i suoli, i materiali ceramici e granulari dipende dalla entità delle deformazioni plastiche. Le conseguenze di questo fenomeno, chiamato nel seguito accoppiamento elastoplastico, vengono esaminate sia in relazione alla parte elastica che alla parte plastica della legge costitutiva. In particolare si dimostra che l'accoppiamento elastoplastico determina la non-normalità della legge di scorrimento plastico. La deviazione della normalità legata alla variazione del modulo elastico è studiata per mezzo di un potenziale di accoppiamento derivato da quello elastico.

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Copyright information

© Masson Italia Editori 1977

Authors and Affiliations

  • Tomasz Hueckel
    • 1
  1. 1.Institute of Fundamental Technological Research Polish Academy of Sciences Swietokrzyska 21WarsawaPoland

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