Numerical and Experimental Investigation of Thermoplastics in Multi-Axis Forming Processes

authored by: Klaus Dröder, Bernd Arno Behrens, Florian Bohne, Alexander Chugreev, Henrik Schulze, Birk Wonnenberg
Abstract: Process planning for multi-axis forming presses is a particular challenge. This process provides the option to actively influencing the material flow in the forming process by defining a six dimensional tool motion path and the tool velocity. By comprehending this interaction, it is possible to control and thereby tailor the induced local material properties of the workpiece. Experiments were conducted with a multi-axis press, which is based on a Stewart platform. A simple plane workpiece geometry is chosen to analyse the flow behaviour and the temperature evolution of the glass mat thermoplastics (GMT) during the forming process. Subsequently, a numerical simulation of the multi-axis forming process is carried out and validated with the experimental data. The numerical analysis focuses on the material modelling as well as the prediction of the flow characteristics. Regarding material modelling of GMT, an extensive material characterization is performed to describe the flow behaviour. A prediction of the flow behaviour of GMT with reference to tool motion is enabled. For the FE simulation the element-free Galerkin method (EFG) is applied for modelling the fluid structure interaction and adaptive procedures.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
External Organisation(s): Technische Universität Braunschweig
Type: Conference article
Journal: Procedia CIRP
Volume: 85
Pages: 95-100
No. of pages: 6
ISSN: 2212-8271
Publication date: 2019
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Control and Systems Engineering, Industrial and Manufacturing Engineering
Electronic version(s): https://doi.org/10.1016/j.procir.2019.09.024 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{0fc5f51a11944782933150b0b395e25d,
title = "Numerical and Experimental Investigation of Thermoplastics in Multi-Axis Forming Processes",
abstract = "Process planning for multi-axis forming presses is a particular challenge. This process provides the option to actively influencing the material flow in the forming process by defining a six dimensional tool motion path and the tool velocity. By comprehending this interaction, it is possible to control and thereby tailor the induced local material properties of the workpiece. Experiments were conducted with a multi-axis press, which is based on a Stewart platform. A simple plane workpiece geometry is chosen to analyse the flow behaviour and the temperature evolution of the glass mat thermoplastics (GMT) during the forming process. Subsequently, a numerical simulation of the multi-axis forming process is carried out and validated with the experimental data. The numerical analysis focuses on the material modelling as well as the prediction of the flow characteristics. Regarding material modelling of GMT, an extensive material characterization is performed to describe the flow behaviour. A prediction of the flow behaviour of GMT with reference to tool motion is enabled. For the FE simulation the element-free Galerkin method (EFG) is applied for modelling the fluid structure interaction and adaptive procedures.",
keywords = "Fiber reinforced plastic, Finite element methode (FEM), Forming, Kinematic, Temperature",
author = "Klaus Dr{\"o}der and Behrens, {Bernd Arno} and Florian Bohne and Alexander Chugreev and Henrik Schulze and Birk Wonnenberg",
note = "Funding information: This ow rk was funded by the Deutsche F rschungsgemein schat f (DFG, German Research Foundation) – 318620418 .; 2nd CIRP Conference on Composite Material Parts Manufacturing, CIRP-CCMPM 2019 ; Conference date: 10-10-2019 Through 11-10-2019",
year = "2019",
doi = "10.1016/j.procir.2019.09.024",
language = "English",
volume = "85",
pages = "95--100",
journal = "Procedia CIRP",
issn = "2212-8271",
publisher = "Elsevier BV",
}