### Abstract

Directional distortion hardening is manifested by the distortion of the shape of the yield surface such that a region of high curvature develops roughly in the direction of loading while a region of lower curvature develops in the opposite direction. Recently, several models were proposed. The simplest one studied, makes use of the Armstrong- Frederick rule, having five independent parameters. The analytical solution for uniaxial cyclic test is derived together with that for the stabilized cyclic response. The evolving shapes of the yield surfaces and their sensitivity to inputs parameters are analysed. An algorithm for material constants fitting is proposed.

Original language | English (US) |
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Title of host publication | Civil-Comp Proceedings |

Publisher | Civil-Comp Press |

Volume | 99 |

ISBN (Print) | 9781905088546 |

State | Published - 2012 |

Event | 11th International Conference on Computational Structures Technology, CST 2012 - Dubrovnik, Croatia Duration: Sep 4 2012 → Sep 7 2012 |

### Other

Other | 11th International Conference on Computational Structures Technology, CST 2012 |
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Country | Croatia |

City | Dubrovnik |

Period | 9/4/12 → 9/7/12 |

### Fingerprint

### Keywords

- Directional distortional hardening
- Metal plasticity
- Yield surface

### ASJC Scopus subject areas

- Computational Theory and Mathematics
- Civil and Structural Engineering
- Artificial Intelligence
- Environmental Engineering

### Cite this

*Civil-Comp Proceedings*(Vol. 99). Civil-Comp Press.

**Calibration of a distortional hardening model of plasticity.** / Plešek, J.; Hrubý, Z.; Parma, S.; Feigenbaum, Heidi P; Dafalias, Y. F.

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

*Civil-Comp Proceedings.*vol. 99, Civil-Comp Press, 11th International Conference on Computational Structures Technology, CST 2012, Dubrovnik, Croatia, 9/4/12.

}

TY - GEN

T1 - Calibration of a distortional hardening model of plasticity

AU - Plešek, J.

AU - Hrubý, Z.

AU - Parma, S.

AU - Feigenbaum, Heidi P

AU - Dafalias, Y. F.

PY - 2012

Y1 - 2012

N2 - Directional distortion hardening is manifested by the distortion of the shape of the yield surface such that a region of high curvature develops roughly in the direction of loading while a region of lower curvature develops in the opposite direction. Recently, several models were proposed. The simplest one studied, makes use of the Armstrong- Frederick rule, having five independent parameters. The analytical solution for uniaxial cyclic test is derived together with that for the stabilized cyclic response. The evolving shapes of the yield surfaces and their sensitivity to inputs parameters are analysed. An algorithm for material constants fitting is proposed.

AB - Directional distortion hardening is manifested by the distortion of the shape of the yield surface such that a region of high curvature develops roughly in the direction of loading while a region of lower curvature develops in the opposite direction. Recently, several models were proposed. The simplest one studied, makes use of the Armstrong- Frederick rule, having five independent parameters. The analytical solution for uniaxial cyclic test is derived together with that for the stabilized cyclic response. The evolving shapes of the yield surfaces and their sensitivity to inputs parameters are analysed. An algorithm for material constants fitting is proposed.

KW - Directional distortional hardening

KW - Metal plasticity

KW - Yield surface

UR - http://www.scopus.com/inward/record.url?scp=84893982056&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893982056&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84893982056

SN - 9781905088546

VL - 99

BT - Civil-Comp Proceedings

PB - Civil-Comp Press

ER -