True stress-strain relationship for finite element simulations of structural details under diffuse necking

Petr Hradil, Asko Talja

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

The paper presents an automated numerical method for acquiring true stress-strain relationship from the material test results of high-strength steels. The model beyond uniform load is iterated to produce load-displacement relationship matching the experimental results re-calculated by finite element method. We have used this approach to evaluate coupon tests of high-strength grades S700 and S960, and extended the study to mild steels S275 and S355 for comparison. The results were validated against the tensile experiments of plates with central hole made from the same steel S960 as original coupons. The presented algorithm will serve as a basis for evaluation of ductility limits for different steel grades.
Original languageEnglish
Title of host publicationProceedings of The 13th Nordic Steel Construction Conference (NSCC-2015)
EditorsMarkku Heinisuo, Jari Mäkinen
PublisherTampere University of Technology
Pages229-230
ISBN (Electronic)978-952-15-3579-6
ISBN (Print)978-952-15-3578-9
Publication statusPublished - 2015
EventNordic Steel Construction Conference 2015 - Tampere, Finland
Duration: 23 Sep 201525 Sep 2015

Conference

ConferenceNordic Steel Construction Conference 2015
CountryFinland
CityTampere
Period23/09/1525/09/15

Fingerprint

Steel
High strength steel
Carbon steel
Ductility
Numerical methods
Finite element method
Experiments

Cite this

Hradil, P., & Talja, A. (2015). True stress-strain relationship for finite element simulations of structural details under diffuse necking. In M. Heinisuo, & J. Mäkinen (Eds.), Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015) (pp. 229-230). Tampere University of Technology.
Hradil, Petr ; Talja, Asko. / True stress-strain relationship for finite element simulations of structural details under diffuse necking. Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015). editor / Markku Heinisuo ; Jari Mäkinen. Tampere University of Technology, 2015. pp. 229-230
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abstract = "The paper presents an automated numerical method for acquiring true stress-strain relationship from the material test results of high-strength steels. The model beyond uniform load is iterated to produce load-displacement relationship matching the experimental results re-calculated by finite element method. We have used this approach to evaluate coupon tests of high-strength grades S700 and S960, and extended the study to mild steels S275 and S355 for comparison. The results were validated against the tensile experiments of plates with central hole made from the same steel S960 as original coupons. The presented algorithm will serve as a basis for evaluation of ductility limits for different steel grades.",
author = "Petr Hradil and Asko Talja",
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Hradil, P & Talja, A 2015, True stress-strain relationship for finite element simulations of structural details under diffuse necking. in M Heinisuo & J Mäkinen (eds), Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015). Tampere University of Technology, pp. 229-230, Nordic Steel Construction Conference 2015, Tampere, Finland, 23/09/15.

True stress-strain relationship for finite element simulations of structural details under diffuse necking. / Hradil, Petr; Talja, Asko.

Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015). ed. / Markku Heinisuo; Jari Mäkinen. Tampere University of Technology, 2015. p. 229-230.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

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AU - Hradil, Petr

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N1 - Extended abstracts

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N2 - The paper presents an automated numerical method for acquiring true stress-strain relationship from the material test results of high-strength steels. The model beyond uniform load is iterated to produce load-displacement relationship matching the experimental results re-calculated by finite element method. We have used this approach to evaluate coupon tests of high-strength grades S700 and S960, and extended the study to mild steels S275 and S355 for comparison. The results were validated against the tensile experiments of plates with central hole made from the same steel S960 as original coupons. The presented algorithm will serve as a basis for evaluation of ductility limits for different steel grades.

AB - The paper presents an automated numerical method for acquiring true stress-strain relationship from the material test results of high-strength steels. The model beyond uniform load is iterated to produce load-displacement relationship matching the experimental results re-calculated by finite element method. We have used this approach to evaluate coupon tests of high-strength grades S700 and S960, and extended the study to mild steels S275 and S355 for comparison. The results were validated against the tensile experiments of plates with central hole made from the same steel S960 as original coupons. The presented algorithm will serve as a basis for evaluation of ductility limits for different steel grades.

UR - http://www.terasrakenneyhdistys.fi/document/1/431/82552f8/Proceeding_of_13th_Nordic_Steel_2015_Construction_Conference.pdf

M3 - Conference abstract in proceedings

SN - 978-952-15-3578-9

SP - 229

EP - 230

BT - Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015)

A2 - Heinisuo, Markku

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PB - Tampere University of Technology

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Hradil P, Talja A. True stress-strain relationship for finite element simulations of structural details under diffuse necking. In Heinisuo M, Mäkinen J, editors, Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015). Tampere University of Technology. 2015. p. 229-230