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

Petr Hradil; Asko Talja

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

Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Scientific

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 language	English
Title of host publication	Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015)
Editors	Markku Heinisuo, Jari Mäkinen
Publisher	Tampere University of Technology
Pages	229-230
ISBN (Electronic)	978-952-15-3579-6
ISBN (Print)	978-952-15-3578-9
Publication status	Published - 2015
Event	Nordic Steel Construction Conference 2015 - Tampere, Finland Duration: 23 Sept 2015 → 25 Sept 2015

Conference

Conference	Nordic Steel Construction Conference 2015
Country/Territory	Finland
City	Tampere
Period	23/09/15 → 25/09/15

Cite this

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title = "True stress-strain relationship for finite element simulations of structural details under diffuse necking",

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",

note = "Extended abstracts; Nordic Steel Construction Conference 2015 ; Conference date: 23-09-2015 Through 25-09-2015",

year = "2015",

language = "English",

isbn = "978-952-15-3578-9",

pages = "229--230",

editor = "Markku Heinisuo and Jari M{\"a}kinen",

booktitle = "Proceedings of The 13th Nordic Steel Construction Conference (NSCC-2015)",

publisher = "Tampere University of Technology",

address = "Finland",

}

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 proceeding › Conference abstract in proceedings › Scientific

TY - CHAP

T1 - True stress-strain relationship for finite element simulations of structural details under diffuse necking

AU - Hradil, Petr

AU - Talja, Asko

N1 - Extended abstracts

PY - 2015

Y1 - 2015

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

A2 - Mäkinen, Jari

PB - Tampere University of Technology

T2 - Nordic Steel Construction Conference 2015

Y2 - 23 September 2015 through 25 September 2015

ER -

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

Abstract

Conference

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