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Einsatz von Additive Manufacturing zur Darstellung von Simulationsergebnissen in der Blechumformung
(2016)
Virtuelle Modell "begreifbar" Machen - Darstellung von Simulationsergebnissen mittels 3D-Farbdruck
(2016)
Additive manufacturing (AM), or 3D printing (3DP), has increasingly become more wide-spread and applied to a great degree over the past years. Along with that, the necessity for training courses which impart the required knowledge for product development with 3D printing rises. This article will introduce a “Rapid Prototyping” workshop which should convey to students the technical and creative knowledge for product development in using additive manufacturing. In this workshop, various 3D printers are initially installed and put into operation for the construction of self-assembly kits during the introduced training course. Afterwards, the students use databanks to select and download suitable components for the 3D print on the basis of criteria. Lastly, the students develop several assembly kits independently and establish design guidelines based on their experience. The students likewise learn to estimate and evaluate economic boundaries such as, e.g. costs and delivery times. For a start, it is a new approach to be using various assembly kits. These are up to date with current technology and dispose of features such as, e.g., additional nozzles for support material and heated building platforms. Moreover, a comprehensive evaluation of the training success will be conducted. The students’ level of knowledge in various areas will also be determined and compared with surveys taken before and after the conducting of the workshops. Additionally, cost and delivery time estimates and knowledge of databanks will be determined through concrete questioning.
A number of design rules must be adhered to in the development and manufacturing of unmanned aerial vehicles. In this, additive manufacturing, particularly in the implementation of requirements with respect to light-weight construction and sustainability, offers several advantages compared to conventional manufacturing methods. Therefore, this article will primarily introduce and compare current concepts for sustainable design using additive manufacturing. These will, above all, consist of the production of complete fuselages and wings by means of rapid prototyping or also rapid tooling. In addition, a new concept will be introduced in which a UAV using AM can be implemented through the combination of very light components and a preferably resource-saving manufacturing method. In this process, a three-dimensional spaceframe is used in combination with a covering in the construction of the wing. Hereby, the development process for sustainable design using additive manufacturing will be analyzed and the results will be explained by means of concrete case studies. In conclusion, the results of these case studies will be compared to the latest technology regarding wing span load.
Today the methods of numerical simulation of sheet metal forming offer a great diversity of possibilities for optimization in product development and in process design. However, the results from simulation are only available as virtual models. Because there are any forming tools available during the early stages of product development, physical models that could serve to represent the virtual results are therefore lacking. Physical 3D-models can be created using 3D-printing and serve as an illustration and present a better understanding of the simulation results. In this way, the results from the simulation can be made more “comprehensible” within a development team. This paper presents the possibilities of 3D-colour printing with particular consideration of the requirements regarding the implementation of sheet metal forming simulation. Using concrete examples of sheet metal forming, the manufacturing of 3D colour models will be expounded upon on the basis of simulation results.