Abstract
Inverse form finding aims in determining the optimal material configuration of a workpiece for a specific forming process. A gradient- and parameter-free (nodal-based) form finding approach has recently been developed, which can be coupled non-invasively as a black box to arbitrary finite element software. Additionally the algorithm is independent from the constitutive behavior. Consequently, the user has not to struggle with the underlying optimization theory behind. Benchmark tests showed already that the approach works robustly and efficiently. This contribution demonstrates that the optimization algorithm is also applicable to more sophisticated forming processes including orthotropic large strain plasticity, combined hardening and frictional contact. A cup deep drawing process with solid-shell elements and a combined deep drawing and upsetting process to form a functional component with external teeth are investigated.
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Acknowledgments
This work was supported by the German Research Foundation (DFG) within the scope of the Transregional Collaborative Research Center on Sheet-Bulk Metal Forming (TCRC 73, https://www.tr-73.de) in the subprojects C3 (Parameter and Shape Optimization) and A1 (Deep Drawing).
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Landkammer, P., Schneider, T., Schulte, R. et al. A non-invasive form finding method with application to metal forming. Prod. Eng. Res. Devel. 10, 93–102 (2016). https://doi.org/10.1007/s11740-016-0659-6
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DOI: https://doi.org/10.1007/s11740-016-0659-6