A stress integration algorithm for phase transforming steels

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Abstract

A new stress integration algorithm for the constitutive models of materials that undergo strain-induced phase transformation is presented. The most common materials that fall into this category are metastable austenitic stainless (TRIP) steels. These materials can be classi¯ed as metal-matrix composites which comprise a soft and a hard metallic phase. A homogenization algorithm is presented that can estimate the evolution of state variables in each phase for a given strain increment. The elastic-plastic behavior of the phases are calculated individually using large deformation theory and the calculated algorithmic tangent moduli are used in different homogenization schemes. Furthermore, the phase transformation process in austenitic stainless steels involves a volumetric expansion and an inelastic shape change collinear with the deviatoric stress. This transformation plasticity is approximated by a phenomenological model and incorporated in the stress update algorithm.
Original languageUndefined
Title of host publicationComplas 2007
Pages-
Number of pages4
Publication statusPublished - 2007
EventIX International Conference on Computational Plasticity. Fundamentals and Applications 2007 - Barcelona, Spain
Duration: 5 Sep 20077 Sep 2007
Conference number: 9

Conference

ConferenceIX International Conference on Computational Plasticity. Fundamentals and Applications 2007
Abbreviated titleCOMPLAS 2007
CountrySpain
CityBarcelona
Period5/09/077/09/07

Keywords

  • IR-69670
  • METIS-263669
  • Onderzoek van algemene industriele aardMechanical engineering and technology

Cite this

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title = "A stress integration algorithm for phase transforming steels",
abstract = "A new stress integration algorithm for the constitutive models of materials that undergo strain-induced phase transformation is presented. The most common materials that fall into this category are metastable austenitic stainless (TRIP) steels. These materials can be classi¯ed as metal-matrix composites which comprise a soft and a hard metallic phase. A homogenization algorithm is presented that can estimate the evolution of state variables in each phase for a given strain increment. The elastic-plastic behavior of the phases are calculated individually using large deformation theory and the calculated algorithmic tangent moduli are used in different homogenization schemes. Furthermore, the phase transformation process in austenitic stainless steels involves a volumetric expansion and an inelastic shape change collinear with the deviatoric stress. This transformation plasticity is approximated by a phenomenological model and incorporated in the stress update algorithm.",
keywords = "IR-69670, METIS-263669, Onderzoek van algemene industriele aardMechanical engineering and technology",
author = "Perdahcioglu, {Emin Semih} and Geijselaers, {Hubertus J.M.} and Han Huetink",
year = "2007",
language = "Undefined",
pages = "--",
booktitle = "Complas 2007",

}

Perdahcioglu, ES, Geijselaers, HJM & Huetink, H 2007, A stress integration algorithm for phase transforming steels. in Complas 2007. pp. -, IX International Conference on Computational Plasticity. Fundamentals and Applications 2007, Barcelona, Spain, 5/09/07.

A stress integration algorithm for phase transforming steels. / Perdahcioglu, Emin Semih; Geijselaers, Hubertus J.M.; Huetink, Han.

Complas 2007. 2007. p. -.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - A stress integration algorithm for phase transforming steels

AU - Perdahcioglu, Emin Semih

AU - Geijselaers, Hubertus J.M.

AU - Huetink, Han

PY - 2007

Y1 - 2007

N2 - A new stress integration algorithm for the constitutive models of materials that undergo strain-induced phase transformation is presented. The most common materials that fall into this category are metastable austenitic stainless (TRIP) steels. These materials can be classi¯ed as metal-matrix composites which comprise a soft and a hard metallic phase. A homogenization algorithm is presented that can estimate the evolution of state variables in each phase for a given strain increment. The elastic-plastic behavior of the phases are calculated individually using large deformation theory and the calculated algorithmic tangent moduli are used in different homogenization schemes. Furthermore, the phase transformation process in austenitic stainless steels involves a volumetric expansion and an inelastic shape change collinear with the deviatoric stress. This transformation plasticity is approximated by a phenomenological model and incorporated in the stress update algorithm.

AB - A new stress integration algorithm for the constitutive models of materials that undergo strain-induced phase transformation is presented. The most common materials that fall into this category are metastable austenitic stainless (TRIP) steels. These materials can be classi¯ed as metal-matrix composites which comprise a soft and a hard metallic phase. A homogenization algorithm is presented that can estimate the evolution of state variables in each phase for a given strain increment. The elastic-plastic behavior of the phases are calculated individually using large deformation theory and the calculated algorithmic tangent moduli are used in different homogenization schemes. Furthermore, the phase transformation process in austenitic stainless steels involves a volumetric expansion and an inelastic shape change collinear with the deviatoric stress. This transformation plasticity is approximated by a phenomenological model and incorporated in the stress update algorithm.

KW - IR-69670

KW - METIS-263669

KW - Onderzoek van algemene industriele aardMechanical engineering and technology

M3 - Conference contribution

SP - -

BT - Complas 2007

ER -