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Design of an experimental program to assess the dynamic fracture properties of a dual phase automotive steel

(2017) PROCEDIA ENGINEERING. 197(DYMAT 23rd Technical Meeting). p.204-213
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Abstract
The dynamic behaviour of materials must be considered when determining the crashworthiness of a vehicle and the safe design of the vehicle components. Series of mechanical tests at wide ranges of stress and strain rates are essential to identify the material's damage and fracture behaviour identical to realistic conditions. In the present contribution, an extensive experimental program has been developed to assess the dynamic fracture properties of dual phase steel (DP-K 1000). Various tensile specimen geometries covering wide range of stress states are employed for testing at quasi static conditions. The limitations imposed on the sample geometries by clamping technique and requirements of high strain rate test based on split Hopkinson bar test principle restrict the use of static geometries for the dynamic range. An optimization approach based on finite element simulations has been adopted to determine the most suitable dimensions for various tensile specimen geometries quantified by stress triaxiality. The possibility of introducing a standard for dynamic sample geometries has also been investigated. Moreover, the influence of transition zone on the deformation of the specimen has been analysed and incorporated into the optimization strategy. The optimized specimen geometries are finally adopted for dynamic material testing so as to derive enough inputs for constitutive material modelling and to facilitate fundamental material research.
Keywords
Dynamic geometry optimization, stress triaxiality, material modelling

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MLA
Chandran, Sarath, et al. “Design of an Experimental Program to Assess the Dynamic Fracture Properties of a Dual Phase Automotive Steel.” PROCEDIA ENGINEERING, edited by Tore Børvik et al., vol. 197, no. DYMAT 23rd Technical Meeting, Elsevier BV, 2017, pp. 204–13, doi:10.1016/j.proeng.2017.08.097.
APA
Chandran, S., Verleysen, P., Lian, J., Liu, W., & Münstermann, S. (2017). Design of an experimental program to assess the dynamic fracture properties of a dual phase automotive steel. PROCEDIA ENGINEERING, 197(DYMAT 23rd Technical Meeting), 204–213. https://doi.org/10.1016/j.proeng.2017.08.097
Chicago author-date
Chandran, Sarath, Patricia Verleysen, Junhe Lian, Wenqi Liu, and Sebastian Münstermann. 2017. “Design of an Experimental Program to Assess the Dynamic Fracture Properties of a Dual Phase Automotive Steel.” Edited by Tore Børvik, Arild Holm Clausen, Odd Sture Hopperstad, Magnus Lanngseth, and Aase Gavina Reyes. PROCEDIA ENGINEERING 197 (DYMAT 23rd Technical Meeting): 204–13. https://doi.org/10.1016/j.proeng.2017.08.097.
Chicago author-date (all authors)
Chandran, Sarath, Patricia Verleysen, Junhe Lian, Wenqi Liu, and Sebastian Münstermann. 2017. “Design of an Experimental Program to Assess the Dynamic Fracture Properties of a Dual Phase Automotive Steel.” Ed by. Tore Børvik, Arild Holm Clausen, Odd Sture Hopperstad, Magnus Lanngseth, and Aase Gavina Reyes. PROCEDIA ENGINEERING 197 (DYMAT 23rd Technical Meeting): 204–213. doi:10.1016/j.proeng.2017.08.097.
Vancouver
1.
Chandran S, Verleysen P, Lian J, Liu W, Münstermann S. Design of an experimental program to assess the dynamic fracture properties of a dual phase automotive steel. Børvik T, Clausen AH, Hopperstad OS, Lanngseth M, Reyes AG, editors. PROCEDIA ENGINEERING. 2017;197(DYMAT 23rd Technical Meeting):204–13.
IEEE
[1]
S. Chandran, P. Verleysen, J. Lian, W. Liu, and S. Münstermann, “Design of an experimental program to assess the dynamic fracture properties of a dual phase automotive steel,” PROCEDIA ENGINEERING, vol. 197, no. DYMAT 23rd Technical Meeting, pp. 204–213, 2017.
@article{8532120,
  abstract     = {{The dynamic behaviour of materials must be considered when determining the crashworthiness of a vehicle and the safe design of the vehicle components. Series of mechanical tests at wide ranges of stress and strain rates are essential to identify the material's damage and fracture behaviour identical to realistic conditions. In the present contribution, an extensive experimental program has been developed to assess the dynamic fracture properties of dual phase steel (DP-K 1000). Various tensile specimen geometries covering wide range of stress states are employed for testing at quasi static conditions. The limitations imposed on the sample geometries by clamping technique and requirements of high strain rate test based on split Hopkinson bar test principle restrict the use of static geometries for the dynamic range. An optimization approach based on finite element simulations has been adopted to determine the most suitable dimensions for various tensile specimen geometries quantified by stress triaxiality. The possibility of introducing a standard for dynamic sample geometries has also been investigated. Moreover, the influence of transition zone on the deformation of the specimen has been analysed and incorporated into the optimization strategy. The optimized specimen geometries are finally adopted for dynamic material testing so as to derive enough inputs for constitutive material modelling and to facilitate fundamental material research.}},
  articleno    = {{22}},
  author       = {{Chandran, Sarath and Verleysen, Patricia and Lian, Junhe and Liu, Wenqi and Münstermann, Sebastian}},
  editor       = {{Børvik, Tore and Clausen, Arild Holm and Hopperstad, Odd Sture and Lanngseth, Magnus and Reyes, Aase Gavina}},
  issn         = {{1877-7058}},
  journal      = {{PROCEDIA ENGINEERING}},
  keywords     = {{Dynamic geometry optimization,stress triaxiality,material modelling}},
  language     = {{eng}},
  location     = {{Trondheim, Norway}},
  number       = {{DYMAT 23rd Technical Meeting}},
  pages        = {{22:204--22:213}},
  publisher    = {{Elsevier BV}},
  title        = {{Design of an experimental program to assess the dynamic fracture properties of a dual phase automotive steel}},
  url          = {{http://dx.doi.org/10.1016/j.proeng.2017.08.097}},
  volume       = {{197}},
  year         = {{2017}},
}

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