Publication detail

Localization Problem of Coupled Ductile Failure Models Compared to Uncoupled Ones

ŠEBEK, F. KUBÍK, P. PETRUŠKA, J.

Original Title

Localization Problem of Coupled Ductile Failure Models Compared to Uncoupled Ones

English Title

Localization Problem of Coupled Ductile Failure Models Compared to Uncoupled Ones

Type

conference paper

Language

en

Original Abstract

Comparison of accumulated damage field of coupled and uncoupled ductile damage models together with history of variables used in calibration process is presented in this paper. Using a non-linear damage accumulation in a local point of view, ductile failure criterion proposed by Xue is adopted and implemented into the Abaqus/Explicit via the user subroutine VUMAT for both types of models. Significant difference in localization between the coupled and uncoupled model is shown. The localization effect generally occurs when coupled models are used. One of the widespread practices to handle it is to use the non-local approach. In the other hand, we would not be able to predict a slant fracture without a certain degree of localization as shown in presented paper. Finally, the aluminum alloy 2024-T351 was examined.

English abstract

Comparison of accumulated damage field of coupled and uncoupled ductile damage models together with history of variables used in calibration process is presented in this paper. Using a non-linear damage accumulation in a local point of view, ductile failure criterion proposed by Xue is adopted and implemented into the Abaqus/Explicit via the user subroutine VUMAT for both types of models. Significant difference in localization between the coupled and uncoupled model is shown. The localization effect generally occurs when coupled models are used. One of the widespread practices to handle it is to use the non-local approach. In the other hand, we would not be able to predict a slant fracture without a certain degree of localization as shown in presented paper. Finally, the aluminum alloy 2024-T351 was examined.

Keywords

Localization; Ductile; Failure; Damage; Explicit

RIV year

2014

Released

12.05.2014

Publisher

Brno University of Technology

Location

Svratka

ISBN

978-80-214-4871-1

Book

Engineering Mechanics 2014

Pages from

632

Pages to

635

Pages count

4

BibTex


@inproceedings{BUT107556,
  author="František {Šebek} and Petr {Kubík} and Jindřich {Petruška}",
  title="Localization Problem of Coupled Ductile Failure Models Compared to Uncoupled Ones",
  annote="Comparison of accumulated damage field of coupled and uncoupled ductile damage models together with history of variables used in calibration process is presented in this paper. Using a non-linear damage accumulation in a local point of view, ductile failure criterion proposed by Xue is adopted and implemented into the Abaqus/Explicit via the user subroutine VUMAT for both types of models. Significant difference in localization between the coupled and uncoupled model is shown. The localization effect generally occurs when coupled models are used. One of the widespread practices to handle it is to use the non-local approach. In the other hand, we would not be able to predict a slant fracture without a certain degree of localization as shown in presented paper. Finally, the aluminum alloy 2024-T351 was examined.",
  address="Brno University of Technology",
  booktitle="Engineering Mechanics 2014",
  chapter="107556",
  howpublished="print",
  institution="Brno University of Technology",
  year="2014",
  month="may",
  pages="632--635",
  publisher="Brno University of Technology",
  type="conference paper"
}