### Abstract

Original language | Undefined |
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Title of host publication | Complas 2007 |

Pages | - |

Number of pages | 4 |

Publication status | Published - 2007 |

Event | IX International Conference on Computational Plasticity. Fundamentals and Applications 2007 - Barcelona, Spain Duration: 5 Sep 2007 → 7 Sep 2007 Conference number: 9 |

### Conference

Conference | IX International Conference on Computational Plasticity. Fundamentals and Applications 2007 |
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Abbreviated title | COMPLAS 2007 |

Country | Spain |

City | Barcelona |

Period | 5/09/07 → 7/09/07 |

### Keywords

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

### Cite this

*Complas 2007*(pp. -)

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*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.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-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 -