University of Twente Student Theses


Internship report

Donderwinkel, T.G. (2014) Internship report.

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Abstract:Fibrous reinforced material have gained the industries interest over the past few decades. It is a serious competitor for lightweight metals used in the aerospace and automotive industry. The major advantage of applying fibrous reinforced material is the high stiffness to weight ratio. It shows great potential regarding lightweight products. Secondly a fabric has a high formability, therefore is it possible to produce complex shapes in a single-step process. When using conventionally metal based processes, this would not be possible. Several steps are necessary to produce a complex/double curved part. The forming behaviour of a fabric is therefore of great industrial interest, since it shows great potential to reduce cycle times. Much research is performed on the topic of forming, and set a basis for prediction tools. Several draping tools are available, some of them are analytical tools where others are based on the finite element method. Every tool has its advantages and disadvantages, and it can be difficult to jump to the right conclusions when it concerns these tools. Whether is concerns the outcome of a prediction/simulation, or which tools should we choose for our process anyway. Finite element method (FEM) based software has shown great potential in the past when it comes to the prediction of forming behaviour of composite material. Since we are able to combine several material models using this method, pre-impregnated fabrics can be simulated too. Where this would be more difficult in conventional draping tools. Two software packages will be compared to one another in a benchmark study. Two different geometries will be simulated and compared with reality. In this study we test several material models, and validate the results gained with these models.
Item Type:Internship Report (Master)
Audi AG, Germany
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Thermoplastic fibre reinforced composites, finite element method, stamp forming
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