Consideration of fiber curvatures in the macroscopic forming simulation of fabrics based on local methods
- type:Abschlussarbeit
- time:ab sofort
- tutor:
Thesis
Consideration of fiber curvatures in the macroscopic forming simulation of fabrics based on local methods
Motivation
The production of complex shaped structural components made of high-performance composite materials for the automotive industry requires the forming of textile semi-finished products in the first process step before infiltration with polymers can take place. A particularly
high lightweight construction potential and the best mechanical properties are offered by continuous fiber-reinforced unidirectional or bidirectional fabrics made of stitched carbon fibers. The simulation of the forming process enables the early detection and
early detection and prevention of potential local defects such as wrinkling, gaps between the fiber bundles or fiber misorientation in the manufacturing process.
Macroscopic modelling approaches are used for the efficient modelling of forming processes of large components, which consider the stitched fibres in a homogenized way. Local effects, such as the sliding of fiber
such as the sliding of fiber bundles or the bending stiffness of individual fiber bundles, are not taken into account in these approaches. Mapping the local effects requires the extension of classic models to include the use of a neighboring element method.
neighboring element method. With this method, a reference element can be provided with non-local information from surrounding elements. The aim of the work is to develop a method based on an already existing neighboring element method
method for the consideration of fiber curvatures. The method is validated by means of experimental investigations.
Work content
- Research on the state of the art and research in the field of macroscopic forming simulation of fabrics
- Familiarization with forming simulation using the ABAQUS/EXPLICIT software
- Implementation of an approach for the consideration of fiber curvatures
- Parameterization and validation based on experimental results
- Evaluation and documentation of the results obtained
Requirements:
- Initiative and independent way of working
- Strong analytical skills
- Interest in simulation and numerics
- Knowledge of ABAQUS/EXPLICIT simulation software (advantageous)
- Programming skills in PYTHON and FORTRAN (advantageous)
Subject area: Mechanical engineering / lightweight construction / computational engineering
Type of work: simulative / numerical
Start: immediately
Contact: M.Sc. Jan Paul Wank
Phone: +49 721 608-45904
E-Mail: janpaul.wank∂kit.edu