Current research topics
Integrative simulation of plastic components: New approaches and models of integrative simulation concepts consider the particular manufacturing process and its influence on the specific product properties. For example, locally varying stiffnesses or anisotropies due to different stretching and cooling rates in extrusion blow moulding are considered during the component design process.
Prediction of shrinkage and warpage in extrusion blow moulding: Integration of nonlinear viscoelastic-viscoplastic material models, such as the Parallel Rheological Framework (PRF), for the description of component shrinkage.
Development of experimental and numerical methods for the identification of material parameters for FE structural analysis
Fluid-Structure Interaction (FSI): Simulation of the behaviour of liquid-filled containers
Structural optimization of generatively manufactured components from vehicle construction
Methods, competences and applications
For many years the research group has been working on the structure-property relationships of thermoplastic materials. The influence of local process conditions on the resulting product properties is investigated. In addition to numerical methods for the identification of material parameters, extensive knowledge in the experimental field (material and component testing) has been acquired.
One working focus is the development of automated CAE workflows, especially for the extrusion blow moulding process. Within the framework of the VMAP research project, standardized interfaces have been developed together with an international consortium. The aim is to exchange all relevant material characteristics and state variables (e.g. strain, stress, orientation, temperature, wall thickness) between the different CAE tools used for the development of products (process simulation, structural analysis, etc.).
Simulations are carried out on the computing cluster of the Bonn-Rhein-Sieg University of Applied Sciences. Automated workflows enable powerful calculations that allow high-resolution simulations in the field of fluid-structure coupling as well as mathematical structure optimization.
- VMAP - A new Interface Standard for Integrated Virtual Material Modelling in Manufacturing Industry – ITEA3 (BMBF) (External Link, German)
- ROFEE – Ressourcenoptimierte Fahrzeugteile für die Elektromobilität durch den Einsatz generativer Fertigung, DBU (German)
- ReBauVES - resource optimised development of structural elements
- Bruch, O., Michels, P., Grotenburg, D.: Enhanced Simulation of Shrinkage and Warpage of Extrusion Blow Molded Parts Using the VMAP Interface Standard, Conference Proceedings of 1st International Conference on CAE Interoperability 2020
- Ramakers-van Dorp, E., Blume, C., Haedecke, T., Pata, V., Reith, D., Bruch, O., Möginger, B., Hausnerova, B., Process-dependent structural and deformation properties of extrusion blow molding parts, Polymer Testing 77, 105903, 2019
- Michels, P.; Bruch,O.; Evers-Dietze, B.; Ramakers van Dorp, E.; Altenbach, H.: Simulative und experimentelle Bestimmung der Bauteilschwindung von extrusionsblasgeformten Kunststoffhohlkörpern, Tagungsband 14. Magdeburger Maschinenbautage, pp. 198–208, 2019
- Michels, P.; Grommes, D.; Oeckerath, A.; Reith, D.; Bruch, O.: An integrative simulation concept for extrusion blow molded plastic bottles, In: Finite Elements in Analysis and Design 164, 2019, pp. 69-78
- Michels, P., Bruch, O., Gulati, P.: ITEA VMAP - How the simulation workflow of blow moulded plastic parts benefits from the VMAP Interface Standard, Proceedings of Nafems World Congress VMAP Conference 2019
- Otto-von-Guericke-Universität Magdeburg, Institut für technische Mechanik, Prof. Dr.-Ing. habil. Dr. h. c. mult. Holm Altenbach
- Fraunhofer SCAI, Geschäftsfeld Multiphysics
- Dr. Reinold Hagen Stiftung