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Damage prediction in roll forming of the high strength aluminum alloy AA7075

Suckow, Timon ; Groche, Peter
Hrsg.: Lukasz Madej, Mateusz Sitko ; Perzynski, Konrad (2023)
Damage prediction in roll forming of the high strength aluminum alloy AA7075.
26th International Conference on Material Forming (ESAFORM 2023). Kraków, Poland (19.-21.04.2023)
doi: 10.21741/9781644902479-86
Konferenzveröffentlichung, Bibliographie

Kurzbeschreibung (Abstract)

Abstract. The high-strength AA7075 alloy offers great potential for lightweight construction thanks to its high specific strength. However, high strength and low ductility are challenging for forming the material in the peak-aged T6-condition in terms of material failure and springback. Therefore, this alloy is usually formed in temperature-supported process routes, which poses major challenges for process design. For cold forming of the alloy in the T6-condition, a reliable prediction of material failure is required in terms of process design. Within this study, this is achieved by applying the modified Mohr-Coulomb (MMC) criterion and an increment based damage evolution rule to the FE-model. To validate the failure prediction and verify the general applicability to different profile geometries, two U-profiles and a V-profile are roll formed. Failure occurs during forming for all profile geometries and the experimental results show a good agreement with the failure prediction. The quality of the damage prediction strongly depends on the calibration for the MMC criterion and the setup of the FE-model, depending on the mesh size and the element type used.

Typ des Eintrags: Konferenzveröffentlichung
Erschienen: 2023
Herausgeber: Lukasz Madej, Mateusz Sitko ; Perzynski, Konrad
Autor(en): Suckow, Timon ; Groche, Peter
Art des Eintrags: Bibliographie
Titel: Damage prediction in roll forming of the high strength aluminum alloy AA7075
Sprache: Englisch
Publikationsjahr: 2023
Ort: Millersville PA, USA
Verlag: Materials Research Forum LLC
Buchtitel: Material Forming - the 26th International Conference on Material Forming (ESAFORM 2023)
Veranstaltungstitel: 26th International Conference on Material Forming (ESAFORM 2023)
Veranstaltungsort: Kraków, Poland
Veranstaltungsdatum: 19.-21.04.2023
DOI: 10.21741/9781644902479-86
Kurzbeschreibung (Abstract):

Abstract. The high-strength AA7075 alloy offers great potential for lightweight construction thanks to its high specific strength. However, high strength and low ductility are challenging for forming the material in the peak-aged T6-condition in terms of material failure and springback. Therefore, this alloy is usually formed in temperature-supported process routes, which poses major challenges for process design. For cold forming of the alloy in the T6-condition, a reliable prediction of material failure is required in terms of process design. Within this study, this is achieved by applying the modified Mohr-Coulomb (MMC) criterion and an increment based damage evolution rule to the FE-model. To validate the failure prediction and verify the general applicability to different profile geometries, two U-profiles and a V-profile are roll formed. Failure occurs during forming for all profile geometries and the experimental results show a good agreement with the failure prediction. The quality of the damage prediction strongly depends on the calibration for the MMC criterion and the setup of the FE-model, depending on the mesh size and the element type used.

Freie Schlagworte: roll forming, aluminum, 7075, material failure, damage, FEM
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU)
Hinterlegungsdatum: 26 Apr 2023 05:45
Letzte Änderung: 26 Apr 2023 09:16
PPN: 507285514
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