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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Viscoplastic Modeling of the Green Anode Forming Process
verfasst von : Hicham Chaouki, Stéphane Thibodeau, Houshang Alamdari, Donald Ziegler, Mario Fafard
Erschienen in: Light Metals 2014
Verlag: Springer International Publishing
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To model the forming process of green anodes, a nonlinear viscoplastic constitutive law using the concept of natural configuration has been developed. For this purpose, a Helmholtz free energy was proposed in order to take into account the nonlinear compressible behaviour of the anode paste and a dissipation potential was introduced to characterize the irreversible deformation process. An experimental study based on compaction tests of the anode paste at 150 °C was carried out. To characterize the Poisson’s effect, which leads to a non-negligible radial pressure, a thin steel instrumented mould was used. An inverse identification procedure using finite elements analysis showed that the model is able to reproduce experimental results in a good agreement.