Obiekt

Tytuł: An alternative material model using a generalized ?J2? finite-strain flow plasticity theory with isotropic hardening

Autor:

Écsi, Ladislav ; Élesztős, Pavel

Data wydania:

2018

Typ zasobu:

artykuł

Współtwórca:

Jurczak, Paweł - red.

Tytuł publikacji grupowej:

IJAME, volume 23 (2018)

Abstract:

In this paper an alternative material model using a generalized "J2" finite-strain flow plasticity theory with isotropic hardening is presented. The model is based on a new nonlinear continuum mechanical theory of finite deformations of elasto-plastic media which allows for the development of objective and thermodynamically consistent material models. ; As a result, the constitutive equation, the evolution equation and even the "normality rule", characterising the plastic flow in the material during return mapping, can be expressed in various forms, using several instances of the yield surface and corresponding pairs of stress measures and strain rates, respectively, which are conjugate with respect to the internal mechanical power and its arbitrary higher order time derivative. ; Therefore the results of the material model when used in numerical analyses are not affected by the description and particularities of the material model formulation. Here, we briefly outline the nonlinear continuum theory along with a detailed description of the material model and finally present the model in a numerical example using a cross-shaped specimen in biaxial tension.

Wydawca:

Zielona Góra: Uniwersytet Zielonogórski

Format:

application/pdf

Identyfikator zasobu:

oai:zbc.uz.zgora.pl:72937

DOI:

10.2478/ijame-2018-0019

Strony:

339-353

Źródło:

IJAME, volume 23, number 2 (2018)

Jezyk:

eng

Licencja:

CC 4.0

Licencja CC BY-NC-ND 4.0:

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Prawa do dysponowania publikacją:

Biblioteka Uniwersytetu Zielonogórskiego

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