Discrete Element Modelling of Concrete Additive Manufacturing Extrusion Technology
Prof. Dr.-Ing. Johannes Fottner, Project leader
Prof. André Katterfeld Dipl. Ing. Stephan Kessler
Summary of B 02
In this project, a near-nozzle mixing and compacting system for concrete extrusion is to be developed. Innovatively the pumpability of the concrete no longer needs to be taken into account. Additives such as light-weight aggregates can be added zonewise as required. To investigate the mixing, conveying and compaction process, a virtual prototype based on a parameterized 3D CAD variant design is developed and analysed kinematically and kinetically with DEM model variants. Suitable viscous DEM concrete models have to be developed and calibrated. The investigations result in a digital twin which enables the machine construction for the A03 project and virtually accompanies the investigations for additive concrete recipes as well as the reinforcement approaches in A03.
is associated scientist, prof. of the Chair of Material Handling at OvGU, dir. of the Institute of Logistics and Material Handling Systems and head of a bulk solids analysis laboratory for DEM material properties. He provides the group with exp. determined DEM material properties for the calibration of DEM simulations and advises the group on the development of cohesive DEM models.
is head of the workgroup bulk conveyors and assists Prof. Fottner in leading project B02. He instructs and supports the academic staff regarding DEM-solutions, 3D-CAD design of machines and virtual prototyping questions to create a digital twin.
2019 | Rößler, T.; Katterfeld, A.: DEM parameter calibration of cohesive bulk materials using a simple angle of repose test. In: Particuology, Amsterdam: Elsevier, 2008, total 11 S.
2018 | Carr, M.; Wheeler, C.; Williams, K.; Katterfeld, A.; Elphick, G.; Nettleton, K.; Chen, W.: Discrete element modelling of problematic bulk materials onto impact plates. In: CHoPS 2018: 9th International Conference for Conveying and Handling of Particulate Solids at the Greenwich Maritime Campus, London, London, total 6 S.
2016 | Rackl, M.; Günthner, W.: Experimental investigation on the influence of different grades of wood chips on screw feeding performance. In: Biom. and Bioe., Vol. 88.
2016 | Rackl, M.; Tan, Y.; Günthner, W. A.: Feeding of Biomass: Design Experience with Wood Chips. In: Bulk Solids Handling 36, 5, pp. 44-49, ISSN 01739980.
2010 | Katterfeld, A.; Gupta, A.; Luding, S.; Soetemann, B.: Discrete element study mixing in an industrial sized mixer. In: Proceedings World Congress on Particle Technology, Nürnberg, ISBN 978-3- 00-030570-2.