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Proceeding Paper

Experimental Model Validation and Fatigue Behaviour of Cold-Formed High Strength Steel †

by
S. Gothivarekar
1,2,*,
S. Coppieters
1,2,
R. H. Talemi
1,2 and
D. Debruyne
1,2
1
Department of Materials Engineering, KU Leuven, 3001 Leuven, Belgium
2
Mechanics of Materials, Products and Processes (MeM2P), KU Leuven, 9000 Gent, Belgium
*
Author to whom correspondence should be addressed.
†
Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018.
Proceedings 2018, 2(8), 373; https://doi.org/10.3390/ICEM18-05200
Published: 4 May 2018
(This article belongs to the Proceedings of The 18th International Conference on Experimental Mechanics)
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Abstract

In the present paper, fatigue fracture behaviour of cold-formed High Strength Steel (HSS) S690QL are investigated. S690QL is often employed, in a pre-deformed state, for load-bearing applications, where cyclic service loads can be critical. Bending processes can induce residual plastic strain in bent areas and this changes the fatigue behaviour significantly. Traditional uniaxial dogbone testing cannot represent this multi-axial phenomenon properly and for this purpose a benchmark specimen is proposed, that is first bent and after subjected to fatigue loading. The bending process is modelled with a quasi-static Finite Element (FE) model, performed in the commercial code Abaqus. To validate the numerical model, a stereo Digital Image Correlation (DIC) set-up is used, capable of measuring the residual plastic strains in the specimen. The present article covers the validation of a cold-forming process followed by a preliminary fatigue analysis of S690QL.
Keywords: cold-forming process; Stereo DIC; numerical modelling; HSS; fatigue cold-forming process; Stereo DIC; numerical modelling; HSS; fatigue

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MDPI and ACS Style

Gothivarekar, S.; Coppieters, S.; Talemi, R.H.; Debruyne, D. Experimental Model Validation and Fatigue Behaviour of Cold-Formed High Strength Steel. Proceedings 2018, 2, 373. https://doi.org/10.3390/ICEM18-05200

AMA Style

Gothivarekar S, Coppieters S, Talemi RH, Debruyne D. Experimental Model Validation and Fatigue Behaviour of Cold-Formed High Strength Steel. Proceedings. 2018; 2(8):373. https://doi.org/10.3390/ICEM18-05200

Chicago/Turabian Style

Gothivarekar, S., S. Coppieters, R. H. Talemi, and D. Debruyne. 2018. "Experimental Model Validation and Fatigue Behaviour of Cold-Formed High Strength Steel" Proceedings 2, no. 8: 373. https://doi.org/10.3390/ICEM18-05200

APA Style

Gothivarekar, S., Coppieters, S., Talemi, R. H., & Debruyne, D. (2018). Experimental Model Validation and Fatigue Behaviour of Cold-Formed High Strength Steel. Proceedings, 2(8), 373. https://doi.org/10.3390/ICEM18-05200

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