Publication detail
Notched specimen under compression for ductile failure criteria
KUBÍK, P. ŠEBEK, F. PETRUŠKA, J.
Czech title
Vrubovaný vzorek při tlaku pro kritéria tvárného porušování
English title
Notched specimen under compression for ductile failure criteria
Type
journal article in Web of Science
Language
en
Original abstract
Notched specimen was designed for testing in compression. It was manufactured from the aluminium alloy 2024-T351, which is widely used in the aerospace, aeronautical and automotive industry. The test, among others, was used for the calibration of three uncoupled ductile fracture criteria dependent on the first invariant of stress tensor and third invariant of deviatoric stress tensor. The yielding was described by three plasticity models dependent on the second invariant of deviatoric stress tensor – proposed by von Mises, dependent on the second and third invariants of deviatoric stress tensor, and the most complex yield criterion dependent on the first invariant of stress tensor and second and third invariants of deviatoric stress tensor. All models were implemented into Abaqus commercial finite element code using VUMAT user subroutine. The ductile fracture prediction was carried out by widely used element deletion technique for specimen under compression. In the aftermath, the results were compared to experiments to see the performance of complex plasticity models with uncoupled fracture criteria.
Czech abstract
Vrubovaný vzorek byl navržen pro testování v tlaku. Byl vyroben ze slitiny hliníku 2024-T351, který je široce využívaná v leteckém, námořním a automobilovém průmyslu. Test byl, mimo jiné, použit pro kalibraci tří nesvázaných kritérií tvárného porušování závislých na prvním invariantu tenzoru napětí a třetím invariantu deviátoru tenzoru napětí. Plasticita byla popsána třemi modely závislým na druhém invariantu deviátoru tenzoru napětí – navrženém von Misesem, závislým na druhém a třetím invariantu deviátoru tenzoru napětí a nejvíce složitá podmínka plasticity závislá na prvním invariantu tenzoru napětí a druhém a třetím invariantu deviátoru tenzoru napětí. Všechny modely byly implementovány do komerčního konečnoprvkového kódu Abaqus pomocí uživatelského podprogramu VUMAT. Predikce tvárného porušování byla provedena pomocí široce používané techniky mazání prvku pro vzorek při tlaku. V důsledku byly porovnány výsledky s experimenty, aby se ukázala výkonnost složitých modelů plasticity s nesvázanými kritérii porušování.
English abstract
Notched specimen was designed for testing in compression. It was manufactured from the aluminium alloy 2024-T351, which is widely used in the aerospace, aeronautical and automotive industry. The test, among others, was used for the calibration of three uncoupled ductile fracture criteria dependent on the first invariant of stress tensor and third invariant of deviatoric stress tensor. The yielding was described by three plasticity models dependent on the second invariant of deviatoric stress tensor – proposed by von Mises, dependent on the second and third invariants of deviatoric stress tensor, and the most complex yield criterion dependent on the first invariant of stress tensor and second and third invariants of deviatoric stress tensor. All models were implemented into Abaqus commercial finite element code using VUMAT user subroutine. The ductile fracture prediction was carried out by widely used element deletion technique for specimen under compression. In the aftermath, the results were compared to experiments to see the performance of complex plasticity models with uncoupled fracture criteria.
Keywords in Czech
Nekvadratický; triaxialita napětí; fenomenologická kritéria; Lodeho závislost; zkouška tlakem; nelineární poškození
Keywords in English
Non-quadratic; Stress triaxiality; Phenomenological criteria; Lode dependence; Upsetting test; Non-linear damage
Released
01.10.2018
ISSN
0167-6636
Volume
125
Number
1
Pages from–to
94–109
Pages count
16
BIBTEX
@article{BUT148810,
author="Petr {Kubík} and František {Šebek} and Jindřich {Petruška},
title="Notched specimen under compression for ductile failure criteria",
year="2018",
volume="125",
number="1",
month="October",
pages="94--109",
issn="0167-6636"
}