Characterisation and optimisation of a failure-model for high strength aluminium alloys

Julian Schlosser; Serkan Mouchtar; Robert Schneider; Jochen Schanz; Wolfgang Rimkus; David Harrison; Martin MacDonald; Muditha Kulatunga

doi:10.3233/978-1-61499-902-7-399

Characterisation and optimisation of a failure-model for high strength aluminium alloys

Julian Schlosser, Serkan Mouchtar, Robert Schneider, Jochen Schanz, Wolfgang Rimkus, David Harrison, Martin MacDonald, Muditha Kulatunga

Mechanical Engineering

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

1 Citation (Scopus)

868 Downloads (Pure)

Abstract

In the present work an effective parameter identification for the evaluation of a failure model for FE-simulations has been carried out. This failure model is suitable to calculate different fracture elongation values among occurring triaxiality of a high-strength aluminium sheet metal alloy (AA7075). Various specimen geometries have been selected to achieve different loading states (triaxiality). For biaxial strains a forming limit curve (FLC) is converted by using mathematical formulations. To measure the equivalent local strains in the event of fracture an optical measurement system has been installed and adapted to a tensile testing machine. The failure curve and the material model which includes the extrapolated flow curve are implemented into the FE-simulation model. In order to improve the accuracy of the failure-curve a parameter optimization has been carried out. It shows that by using the optimised failure curve a high correlation between experimental and calculated force-displacement curves for any given specimen geometry can be achieved.

Original language	English
Title of host publication	Advances in Manufacturing Technology XXXII
Editors	Peter Thorvald, Keith Case
Pages	399-404
Number of pages	6
ISBN (Electronic)	9781614999027
DOIs	https://doi.org/10.3233/978-1-61499-902-7-399
Publication status	Published - 30 Sept 2018

Publication series

Name	Advances in Transdisciplinary Engineering
Publisher	IOS Press
Volume	8
ISSN (Print)	2352-751X
ISSN (Electronic)	2352-7528

Keywords

AA7075
Failure model
FEA
FEM
FLC
High strength aluminium alloys
Lightweight design

ASJC Scopus subject areas

Software
Industrial and Manufacturing Engineering
Computer Science Applications
Algebra and Number Theory
Strategy and Management

Documents and Links

10.3233/978-1-61499-902-7-399

Schlosser, J. et al (2018) Characterisation and optimisation of a failure-model for high strength aluminium alloys
Copyright © IOS Press 2018. Published by IOS Press. This is a post-peer-review, pre-copy edited version of an article published in Advances in Transdisciplinary Engineering, Volume 8: Advances in Manufacturing Technology XXXII. The definitive publisher-authenticated version is available online at: https://doi.org/10.3233/978-1-61499-902-7-399
Author accepted manuscript, 988 KB

Cite this

Schlosser, J., Mouchtar, S., Schneider, R., Schanz, J., Rimkus, W., Harrison, D., MacDonald, M., & Kulatunga, M. (2018). Characterisation and optimisation of a failure-model for high strength aluminium alloys. In P. Thorvald, & K. Case (Eds.), Advances in Manufacturing Technology XXXII (pp. 399-404). (Advances in Transdisciplinary Engineering; Vol. 8). https://doi.org/10.3233/978-1-61499-902-7-399

@inproceedings{de7fd6f7324245c7990f9c2d1b0d1cc9,

title = "Characterisation and optimisation of a failure-model for high strength aluminium alloys",

abstract = "In the present work an effective parameter identification for the evaluation of a failure model for FE-simulations has been carried out. This failure model is suitable to calculate different fracture elongation values among occurring triaxiality of a high-strength aluminium sheet metal alloy (AA7075). Various specimen geometries have been selected to achieve different loading states (triaxiality). For biaxial strains a forming limit curve (FLC) is converted by using mathematical formulations. To measure the equivalent local strains in the event of fracture an optical measurement system has been installed and adapted to a tensile testing machine. The failure curve and the material model which includes the extrapolated flow curve are implemented into the FE-simulation model. In order to improve the accuracy of the failure-curve a parameter optimization has been carried out. It shows that by using the optimised failure curve a high correlation between experimental and calculated force-displacement curves for any given specimen geometry can be achieved. ",

keywords = "AA7075, Failure model, FEA, FEM, FLC, High strength aluminium alloys, Lightweight design",

author = "Julian Schlosser and Serkan Mouchtar and Robert Schneider and Jochen Schanz and Wolfgang Rimkus and David Harrison and Martin MacDonald and Muditha Kulatunga",

note = "Pub date added by author (MM/YYYY). Recorded as last date in month. ET Acceptance in SAN Note - has ISSN and in scope AAM: made public, no embargo noted in default publisher policy in Sherpa. Exception email sent 14/11/19 ET ^Author confirmed no exception applies (email in SAN). ET 22/11/19 ",

year = "2018",

month = sep,

day = "30",

doi = "10.3233/978-1-61499-902-7-399",

language = "English",

isbn = "9781614999010",

series = "Advances in Transdisciplinary Engineering",

publisher = "IOS Press",

pages = "399--404",

editor = "Peter Thorvald and Keith Case",

booktitle = "Advances in Manufacturing Technology XXXII",

}

Schlosser, J, Mouchtar, S, Schneider, R, Schanz, J, Rimkus, W, Harrison, D, MacDonald, M & Kulatunga, M 2018, Characterisation and optimisation of a failure-model for high strength aluminium alloys. in P Thorvald & K Case (eds), Advances in Manufacturing Technology XXXII. Advances in Transdisciplinary Engineering, vol. 8, pp. 399-404. https://doi.org/10.3233/978-1-61499-902-7-399

Characterisation and optimisation of a failure-model for high strength aluminium alloys. / Schlosser, Julian; Mouchtar, Serkan; Schneider, Robert et al.
Advances in Manufacturing Technology XXXII. ed. / Peter Thorvald; Keith Case. 2018. p. 399-404 (Advances in Transdisciplinary Engineering; Vol. 8).

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

TY - GEN

T1 - Characterisation and optimisation of a failure-model for high strength aluminium alloys

AU - Schlosser, Julian

AU - Mouchtar, Serkan

AU - Schneider, Robert

AU - Schanz, Jochen

AU - Rimkus, Wolfgang

AU - Harrison, David

AU - MacDonald, Martin

AU - Kulatunga, Muditha

N1 - Pub date added by author (MM/YYYY). Recorded as last date in month. ET Acceptance in SAN Note - has ISSN and in scope AAM: made public, no embargo noted in default publisher policy in Sherpa. Exception email sent 14/11/19 ET ^Author confirmed no exception applies (email in SAN). ET 22/11/19

PY - 2018/9/30

Y1 - 2018/9/30

N2 - In the present work an effective parameter identification for the evaluation of a failure model for FE-simulations has been carried out. This failure model is suitable to calculate different fracture elongation values among occurring triaxiality of a high-strength aluminium sheet metal alloy (AA7075). Various specimen geometries have been selected to achieve different loading states (triaxiality). For biaxial strains a forming limit curve (FLC) is converted by using mathematical formulations. To measure the equivalent local strains in the event of fracture an optical measurement system has been installed and adapted to a tensile testing machine. The failure curve and the material model which includes the extrapolated flow curve are implemented into the FE-simulation model. In order to improve the accuracy of the failure-curve a parameter optimization has been carried out. It shows that by using the optimised failure curve a high correlation between experimental and calculated force-displacement curves for any given specimen geometry can be achieved.

AB - In the present work an effective parameter identification for the evaluation of a failure model for FE-simulations has been carried out. This failure model is suitable to calculate different fracture elongation values among occurring triaxiality of a high-strength aluminium sheet metal alloy (AA7075). Various specimen geometries have been selected to achieve different loading states (triaxiality). For biaxial strains a forming limit curve (FLC) is converted by using mathematical formulations. To measure the equivalent local strains in the event of fracture an optical measurement system has been installed and adapted to a tensile testing machine. The failure curve and the material model which includes the extrapolated flow curve are implemented into the FE-simulation model. In order to improve the accuracy of the failure-curve a parameter optimization has been carried out. It shows that by using the optimised failure curve a high correlation between experimental and calculated force-displacement curves for any given specimen geometry can be achieved.

KW - AA7075

KW - Failure model

KW - FEA

KW - FEM

KW - FLC

KW - High strength aluminium alloys

KW - Lightweight design

U2 - 10.3233/978-1-61499-902-7-399

DO - 10.3233/978-1-61499-902-7-399

M3 - Conference contribution

SN - 9781614999010

T3 - Advances in Transdisciplinary Engineering

SP - 399

EP - 404

BT - Advances in Manufacturing Technology XXXII

A2 - Thorvald, Peter

A2 - Case, Keith

ER -

Characterisation and optimisation of a failure-model for high strength aluminium alloys

Abstract

Publication series

Keywords

ASJC Scopus subject areas

Documents and Links

Fingerprint

Cite this