Elsenheimer, Dirk ; Taplick, Christoph ; Groche, Peter (2011)
Modeling of the material behavior during hot hydroforming.
In: Materialwissenschaft und Werkstofftechnik, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 42 (8)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
For the purpose of numerically simulating metal forming processes, material data are necessary, determined by testing procedures similar to the particular process. The new technology of hot tube bulge tests has been introduced recently, fulfilling the requirements of material data determination for hot hydroforming. Based on measurement data gained by this technology, selected constitutive relations for approximating the flow stress depending on temperature, strain rate and logarithmic strain were parameterized applying linear regression analysis. Using the material law with the best approximation quality among the regarded equations, a numerical simulation of an exemplary forming process was accomplished. A comparison between the experimentally obtained geometry after a hot hydroforming process and the prediction by numerical analysis is used for evaluating the quality and applicability of the determined material data for this kind of process. Additionally, a process simulation, using extrapolated material data from compression tests is presented to visualize the influence of the testing procedure on the resulting part geometry prediction.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Elsenheimer, Dirk ; Taplick, Christoph ; Groche, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Modeling of the material behavior during hot hydroforming |
| Sprache: | Englisch |
| Publikationsjahr: | 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materialwissenschaft und Werkstofftechnik, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| Jahrgang/Volume einer Zeitschrift: | 42 |
| (Heft-)Nummer: | 8 |
| Kurzbeschreibung (Abstract): | For the purpose of numerically simulating metal forming processes, material data are necessary, determined by testing procedures similar to the particular process. The new technology of hot tube bulge tests has been introduced recently, fulfilling the requirements of material data determination for hot hydroforming. Based on measurement data gained by this technology, selected constitutive relations for approximating the flow stress depending on temperature, strain rate and logarithmic strain were parameterized applying linear regression analysis. Using the material law with the best approximation quality among the regarded equations, a numerical simulation of an exemplary forming process was accomplished. A comparison between the experimentally obtained geometry after a hot hydroforming process and the prediction by numerical analysis is used for evaluating the quality and applicability of the determined material data for this kind of process. Additionally, a process simulation, using extrapolated material data from compression tests is presented to visualize the influence of the testing procedure on the resulting part geometry prediction. |
| Freie Schlagworte: | hot hydro forming, material properties, constitutive law, hot tube bulge test |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) |
| Hinterlegungsdatum: | 12 Sep 2012 14:49 |
| Letzte Änderung: | 26 Nov 2020 10:24 |
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