Details
| Original language | English |
|---|---|
| Pages (from-to) | 739-743 |
| Number of pages | 5 |
| Journal | Procedia Manufacturing |
| Volume | 50 |
| Publication status | Published - 4 Sept 2020 |
| Event | 18th Metal Forming International Conference, Metal Forming 2020 - Krakow, Poland Duration: 13 Sept 2020 → 16 Sept 2020 |
Abstract
Today, the reduction of CO2 emissions is essential to meet global climate requirements. In this context, a reduction in vehicle weight is the most efficient way to reduce the fuel consumption of a passenger car. Magnesium combines relatively high strength with low weight and is therefore an interesting construction material for lightweight solutions. In numerical process design, it is essential to be aware of the forming capacity of a material. The common method to describe the failure behaviour is the use of forming limit curve (FLC). Stress-based models offer the advantage of a strain path consideration and an extension in the area of shearing and compression. In this paper a stress-based damage model, Modified Mohr-Coulomb (MMC), was parameterized by IFUM Butterfly-Tests for an AZ31 magnesium sheet alloy under consideration of elevated process temperatures. For this purpose, the tests were carried out at different stress states and temperatures using a specially designed testing device. In addition, forming limit curves were determined by Nakajima tests. Finally, both methods, MMC and FLC, were compared to an experimental deep-drawing test. This comparison showed that the MMC Model achieved significantly better results regarding the fracture prediction in this application case.
Keywords
- Fracture Characterisation, IFUM Butterfly-Tests, Magnesium Sheet AZ31B, Stress-based Fracture Modelling
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
- Computer Science(all)
- Artificial Intelligence
Sustainable Development Goals
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In: Procedia Manufacturing, Vol. 50, 04.09.2020, p. 739-743.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Fracture modelling of magnesium sheet alloy AZ31 for deep drawing processes at elevated temperatures
AU - Behrens, Bernd Arno
AU - Wester, Hendrik
AU - Dykiert, Matthäus
N1 - Funding Information: The authors are much obliged to the DFG (Deutsche Forschungsgemeinschaft, eG rman eR search Foundation) for the financial support of project 44192561 “Enhanced FE-simulation of tempered forming processes with the magnesium sheet material AZ31B by an extended modelling of its formability”.
PY - 2020/9/4
Y1 - 2020/9/4
N2 - Today, the reduction of CO2 emissions is essential to meet global climate requirements. In this context, a reduction in vehicle weight is the most efficient way to reduce the fuel consumption of a passenger car. Magnesium combines relatively high strength with low weight and is therefore an interesting construction material for lightweight solutions. In numerical process design, it is essential to be aware of the forming capacity of a material. The common method to describe the failure behaviour is the use of forming limit curve (FLC). Stress-based models offer the advantage of a strain path consideration and an extension in the area of shearing and compression. In this paper a stress-based damage model, Modified Mohr-Coulomb (MMC), was parameterized by IFUM Butterfly-Tests for an AZ31 magnesium sheet alloy under consideration of elevated process temperatures. For this purpose, the tests were carried out at different stress states and temperatures using a specially designed testing device. In addition, forming limit curves were determined by Nakajima tests. Finally, both methods, MMC and FLC, were compared to an experimental deep-drawing test. This comparison showed that the MMC Model achieved significantly better results regarding the fracture prediction in this application case.
AB - Today, the reduction of CO2 emissions is essential to meet global climate requirements. In this context, a reduction in vehicle weight is the most efficient way to reduce the fuel consumption of a passenger car. Magnesium combines relatively high strength with low weight and is therefore an interesting construction material for lightweight solutions. In numerical process design, it is essential to be aware of the forming capacity of a material. The common method to describe the failure behaviour is the use of forming limit curve (FLC). Stress-based models offer the advantage of a strain path consideration and an extension in the area of shearing and compression. In this paper a stress-based damage model, Modified Mohr-Coulomb (MMC), was parameterized by IFUM Butterfly-Tests for an AZ31 magnesium sheet alloy under consideration of elevated process temperatures. For this purpose, the tests were carried out at different stress states and temperatures using a specially designed testing device. In addition, forming limit curves were determined by Nakajima tests. Finally, both methods, MMC and FLC, were compared to an experimental deep-drawing test. This comparison showed that the MMC Model achieved significantly better results regarding the fracture prediction in this application case.
KW - Fracture Characterisation
KW - IFUM Butterfly-Tests
KW - Magnesium Sheet AZ31B
KW - Stress-based Fracture Modelling
UR - http://www.scopus.com/inward/record.url?scp=85099820934&partnerID=8YFLogxK
U2 - 10.1016/j.promfg.2020.08.133
DO - 10.1016/j.promfg.2020.08.133
M3 - Conference article
AN - SCOPUS:85099820934
VL - 50
SP - 739
EP - 743
JO - Procedia Manufacturing
JF - Procedia Manufacturing
SN - 2351-9789
T2 - 18th Metal Forming International Conference, Metal Forming 2020
Y2 - 13 September 2020 through 16 September 2020
ER -