Details
| Original language | English |
|---|---|
| Title of host publication | Mechatronics 4.0 |
| Subtitle of host publication | Proceedings of the 1st International Workshop on Mechatronics 4.0, June 8-9, 2019, Mahdia, Tunisia |
| Editors | Maher Barkallah, Jamel Louati, Omar Ayadi, Fakher Chaari, Mohamed Haddar, Jean-Yves Choley |
| Pages | 77-86 |
| Number of pages | 10 |
| ISBN (electronic) | 9783030467296 |
| Publication status | Published - 2020 |
| Event | 1st International Workshop on Mechatronics 4.0, MECHATRONICS 2019 - Mahdia, Tunisia Duration: 8 Jun 2019 → 9 Jun 2019 |
Publication series
| Name | Lecture Notes in Mechanical Engineering |
|---|---|
| ISSN (Print) | 2195-4356 |
| ISSN (electronic) | 2195-4364 |
Abstract
Sintering technology is becoming increasingly important in metal industry as they offer numerous advantages comparing to other manufacturing processes. So that, the powder metal (PM) technology is currently well-established for the manufacturing of near-net-shape thin-walled sintered components with strong cross-sectional transitions, especially in the automotive industry. The density gradients in the green bodies caused during the powder compacting process lead to the sintering distortion which is a relevant problem in this industry. The numerical simulation based on the finite element method (FEM) can provide a significant contribution in the design and optimization of powder compacting processes to reliably reduce such problems. Here, the material modeling required for the FE calculation is of crucial importance. In this presented work, the DRUCKER-PRAGER-Cap model was chosen for the numerical description of the compressible behavior of magnesium powder. Here, in the first step, the material-dependent failure line was determined on the basis of diametrical and uniaxial compression tests. In the second step, the elliptical caps depending on the relative density were specified by means of a simple axial compression test combined with the assumption of associated flow. This material modeling is then used to study the influence of the powder compacting strategy on the homogeneity in the distribution of the relative density is shown for the rotationally symmetric L-shape.
Keywords
- Compacting, FE Simulation, Magnesium, Material Modeling, Sintering
ASJC Scopus subject areas
- Engineering(all)
- Automotive Engineering
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Mechanical Engineering
- Chemical Engineering(all)
- Fluid Flow and Transfer Processes
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Mechatronics 4.0: Proceedings of the 1st International Workshop on Mechatronics 4.0, June 8-9, 2019, Mahdia, Tunisia. ed. / Maher Barkallah; Jamel Louati; Omar Ayadi; Fakher Chaari; Mohamed Haddar; Jean-Yves Choley. 2020. p. 77-86 (Lecture Notes in Mechanical Engineering).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Magnesium Powder Compacting
AU - Bouguecha, Anas
AU - Behrens, Bernd Arno
N1 - Funding Information: This work has been done at the Institute of Forming Technology and Machines (IFUM) of the Leibniz Universitaet Hannover (LUH). This study is part of the investigations within the research project ?Near-net shape production of complex, sintered components made of magnesium powder?. The authors would like to thank the German Research foundation (DFG) for the financial support.Publisher
PY - 2020
Y1 - 2020
N2 - Sintering technology is becoming increasingly important in metal industry as they offer numerous advantages comparing to other manufacturing processes. So that, the powder metal (PM) technology is currently well-established for the manufacturing of near-net-shape thin-walled sintered components with strong cross-sectional transitions, especially in the automotive industry. The density gradients in the green bodies caused during the powder compacting process lead to the sintering distortion which is a relevant problem in this industry. The numerical simulation based on the finite element method (FEM) can provide a significant contribution in the design and optimization of powder compacting processes to reliably reduce such problems. Here, the material modeling required for the FE calculation is of crucial importance. In this presented work, the DRUCKER-PRAGER-Cap model was chosen for the numerical description of the compressible behavior of magnesium powder. Here, in the first step, the material-dependent failure line was determined on the basis of diametrical and uniaxial compression tests. In the second step, the elliptical caps depending on the relative density were specified by means of a simple axial compression test combined with the assumption of associated flow. This material modeling is then used to study the influence of the powder compacting strategy on the homogeneity in the distribution of the relative density is shown for the rotationally symmetric L-shape.
AB - Sintering technology is becoming increasingly important in metal industry as they offer numerous advantages comparing to other manufacturing processes. So that, the powder metal (PM) technology is currently well-established for the manufacturing of near-net-shape thin-walled sintered components with strong cross-sectional transitions, especially in the automotive industry. The density gradients in the green bodies caused during the powder compacting process lead to the sintering distortion which is a relevant problem in this industry. The numerical simulation based on the finite element method (FEM) can provide a significant contribution in the design and optimization of powder compacting processes to reliably reduce such problems. Here, the material modeling required for the FE calculation is of crucial importance. In this presented work, the DRUCKER-PRAGER-Cap model was chosen for the numerical description of the compressible behavior of magnesium powder. Here, in the first step, the material-dependent failure line was determined on the basis of diametrical and uniaxial compression tests. In the second step, the elliptical caps depending on the relative density were specified by means of a simple axial compression test combined with the assumption of associated flow. This material modeling is then used to study the influence of the powder compacting strategy on the homogeneity in the distribution of the relative density is shown for the rotationally symmetric L-shape.
KW - Compacting
KW - FE Simulation
KW - Magnesium
KW - Material Modeling
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=85086273240&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-46729-6_8
DO - 10.1007/978-3-030-46729-6_8
M3 - Conference contribution
AN - SCOPUS:85086273240
SN - 9783030467289
T3 - Lecture Notes in Mechanical Engineering
SP - 77
EP - 86
BT - Mechatronics 4.0
A2 - Barkallah, Maher
A2 - Louati, Jamel
A2 - Ayadi, Omar
A2 - Chaari, Fakher
A2 - Haddar, Mohamed
A2 - Choley, Jean-Yves
T2 - 1st International Workshop on Mechatronics 4.0, MECHATRONICS 2019
Y2 - 8 June 2019 through 9 June 2019
ER -