Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011 |
| Pages | 945-950 |
| Number of pages | 6 |
| Publication status | Published - 1 Dec 2011 |
| Event | 10th International Conference on Technology of Plasticity, ICTP 2011 - Aachen, Germany Duration: 25 Sept 2011 → 30 Sept 2011 |
Publication series
| Name | Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011 |
|---|
Abstract
An approach to determine the parameters of the quasistatic isothermal part of the Johnson-Cook fracture model for sheet metal with the help of the uniaxial tensile test, bulge test, and a modified Miyauchi shear test accompanied with the optical strain measurement is presented. The uniaxial tensile test was performed according to the ISO 6892 on specimens with 30 mm wide gauge section. The bulge test was carried out on the blanks with the diameter of the deformation zone of 200 mm based on the recommendations of the related IDDRG German working group. The shear test was conducted in a universal testing machine on modified Miyauchi shear specimens. The specimen modifications undertaken in the present study are related to the geometry of the shear zones and help minimize strain concentrations at the edges and increase plastic strains in the material interior. To demonstrate the advantages of the new specimen geometry, some results of the FEA-based optimization are given. With the help of the proposed approach, plastic strain to fracture can be estimated at three distinctly different stress states at relatively low experimental costs. The obtained data makes unique parameterization of the model possible for a wide range of stress states. Exemplarily, the parameter set for a cold-reduced high-strength IF steel sheet is given.
Keywords
- Formability, Shear test, Sheet metal
ASJC Scopus subject areas
- Materials Science(all)
- Polymers and Plastics
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Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011. 2011. p. 945-950 (Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Determination of the Johnson-Cook fracture model parameters for sheet metal based on the uniaxial tensile test, bulge test, and a modified Miyauchi shear test
AU - Behrens, B. A.
AU - Bouguecha, A.
AU - Vucetic, M.
AU - Peshekhodov, I.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - An approach to determine the parameters of the quasistatic isothermal part of the Johnson-Cook fracture model for sheet metal with the help of the uniaxial tensile test, bulge test, and a modified Miyauchi shear test accompanied with the optical strain measurement is presented. The uniaxial tensile test was performed according to the ISO 6892 on specimens with 30 mm wide gauge section. The bulge test was carried out on the blanks with the diameter of the deformation zone of 200 mm based on the recommendations of the related IDDRG German working group. The shear test was conducted in a universal testing machine on modified Miyauchi shear specimens. The specimen modifications undertaken in the present study are related to the geometry of the shear zones and help minimize strain concentrations at the edges and increase plastic strains in the material interior. To demonstrate the advantages of the new specimen geometry, some results of the FEA-based optimization are given. With the help of the proposed approach, plastic strain to fracture can be estimated at three distinctly different stress states at relatively low experimental costs. The obtained data makes unique parameterization of the model possible for a wide range of stress states. Exemplarily, the parameter set for a cold-reduced high-strength IF steel sheet is given.
AB - An approach to determine the parameters of the quasistatic isothermal part of the Johnson-Cook fracture model for sheet metal with the help of the uniaxial tensile test, bulge test, and a modified Miyauchi shear test accompanied with the optical strain measurement is presented. The uniaxial tensile test was performed according to the ISO 6892 on specimens with 30 mm wide gauge section. The bulge test was carried out on the blanks with the diameter of the deformation zone of 200 mm based on the recommendations of the related IDDRG German working group. The shear test was conducted in a universal testing machine on modified Miyauchi shear specimens. The specimen modifications undertaken in the present study are related to the geometry of the shear zones and help minimize strain concentrations at the edges and increase plastic strains in the material interior. To demonstrate the advantages of the new specimen geometry, some results of the FEA-based optimization are given. With the help of the proposed approach, plastic strain to fracture can be estimated at three distinctly different stress states at relatively low experimental costs. The obtained data makes unique parameterization of the model possible for a wide range of stress states. Exemplarily, the parameter set for a cold-reduced high-strength IF steel sheet is given.
KW - Formability
KW - Shear test
KW - Sheet metal
UR - http://www.scopus.com/inward/record.url?scp=84898077097&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84898077097
SN - 9783514007840
T3 - Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011
SP - 945
EP - 950
BT - Proceedings of the 10th International Conference on Technology of Plasticity, ICTP 2011
T2 - 10th International Conference on Technology of Plasticity, ICTP 2011
Y2 - 25 September 2011 through 30 September 2011
ER -