Dynamic fracture of a dual phase automotive steel
- Author
- Sarath Chandran (UGent) , Patricia Verleysen (UGent) , Junhe Lian, Wenqi Liu and Sebastian Münstermann
- Organization
- Abstract
- Dynamic testing of sheet metals has become more important due to the need for more reliable vehicle crashworthiness assessments in the automotive industry. The study presents a comprehensive set of experimental results that covers a wide range of stress states on a dual phase automotive sheet steel. Split Hopkinson bar tensile (SHBT) tests are performed on dogbone shaped samples to obtain the plastic hardening properties at high strain rates. A set of purpose designed sample geometries comprising of three notched dogbone tension samples is tested at high strain rates to characterise the dynamic damage and fracture properties under well controlled stress states. The geometry of the samples is optimised with the aid of finite element analysis. During the tests, high speed photography together with digital image correlation are implemented to acquire full field measurements and to gain more insight into the localisation of strains at high strain rates. An experimental-numerical approach is proposed to effectively determine the fracture characteristics of the dual phase steel under extreme conditions. A modified Bai-Wierzbicki model is implemented to assess the damage initiation and subsequent failure. Additionally, the fracture mechanisms are studied utilizing scanning electron microscopy.
- Keywords
- Dynamic damage and fracture, Split Hopkinson bar, Digital image correlation, material modelling, crash worthiness
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8574897
- MLA
- Chandran, Sarath, et al. “Dynamic Fracture of a Dual Phase Automotive Steel.” 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018), edited by E. Buzaud et al., vol. 183, EDP Sciences, 2018, doi:10.1051/epjconf/201818302047.
- APA
- Chandran, S., Verleysen, P., Lian, J., Liu, W., & Münstermann, S. (2018). Dynamic fracture of a dual phase automotive steel. In E. Buzaud, A. Cosculluela, H. Couque, & E. Cadoni (Eds.), 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018) (Vol. 183). https://doi.org/10.1051/epjconf/201818302047
- Chicago author-date
- Chandran, Sarath, Patricia Verleysen, Junhe Lian, Wenqi Liu, and Sebastian Münstermann. 2018. “Dynamic Fracture of a Dual Phase Automotive Steel.” In 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018), edited by E. Buzaud, A. Cosculluela, H. Couque, and E. Cadoni. Vol. 183. EDP Sciences. https://doi.org/10.1051/epjconf/201818302047.
- Chicago author-date (all authors)
- Chandran, Sarath, Patricia Verleysen, Junhe Lian, Wenqi Liu, and Sebastian Münstermann. 2018. “Dynamic Fracture of a Dual Phase Automotive Steel.” In 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018), ed by. E. Buzaud, A. Cosculluela, H. Couque, and E. Cadoni. Vol. 183. EDP Sciences. doi:10.1051/epjconf/201818302047.
- Vancouver
- 1.Chandran S, Verleysen P, Lian J, Liu W, Münstermann S. Dynamic fracture of a dual phase automotive steel. In: Buzaud E, Cosculluela A, Couque H, Cadoni E, editors. 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018). EDP Sciences; 2018.
- IEEE
- [1]S. Chandran, P. Verleysen, J. Lian, W. Liu, and S. Münstermann, “Dynamic fracture of a dual phase automotive steel,” in 12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018), Arcachon, France, 2018, vol. 183.
@inproceedings{8574897,
abstract = {{Dynamic testing of sheet metals has become more important due to the need for more reliable vehicle crashworthiness assessments in the automotive industry. The study presents a comprehensive set of experimental results that covers a wide range of stress states on a dual phase automotive sheet steel. Split Hopkinson bar tensile (SHBT) tests are performed on dogbone shaped samples to obtain the plastic hardening properties at high strain rates. A set of purpose designed sample geometries comprising of three notched dogbone tension samples is tested at high strain rates to characterise the dynamic damage and fracture properties under well controlled stress states. The geometry of the samples is optimised with the aid of finite element analysis. During the tests, high speed photography together with digital image correlation are implemented to acquire full field measurements and to gain more insight into the localisation of strains at high strain rates. An experimental-numerical approach is proposed to effectively determine the fracture characteristics of the dual phase steel under extreme conditions. A modified Bai-Wierzbicki model is implemented to assess the damage initiation and subsequent failure. Additionally, the fracture mechanisms are studied utilizing scanning electron microscopy.}},
articleno = {{02047}},
author = {{Chandran, Sarath and Verleysen, Patricia and Lian, Junhe and Liu, Wenqi and Münstermann, Sebastian}},
booktitle = {{12TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING (DYMAT 2018)}},
editor = {{Buzaud, E. and Cosculluela, A. and Couque, H. and Cadoni, E.}},
isbn = {{9782759890538}},
issn = {{2100-014X}},
keywords = {{Dynamic damage and fracture,Split Hopkinson bar,Digital image correlation,material modelling,crash worthiness}},
language = {{eng}},
location = {{Arcachon, France}},
pages = {{6}},
publisher = {{EDP Sciences}},
title = {{Dynamic fracture of a dual phase automotive steel}},
url = {{http://doi.org/10.1051/epjconf/201818302047}},
volume = {{183}},
year = {{2018}},
}
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