Browsing by Subject "design check"

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Design Guidelines for a Software-Supported Adaptation of Additively Manufactured Components with Regard to a Robust Production
(University of Texas at Austin, 2018) Lammers, S.; Tominski, J.; Magerkohl, S.; Künneke, T.; Lieneke, T.; Zimmer, D.
The design of additively manufactured components requires a rethinking in the design process. This is inhibited by a lack of knowledge about additive manufacturing technologies. For this reason, a large number of design guidelines have been developed in recent years. In their present form the design guidelines are not suitable for processing in a software algorithm, since the guidelines have a certain redundancy and partly influence each other. This paper describes several steps to consolidate the existing guidelines and to prepare them in a way that they can be used in a software algorithm for a design check. Therefore, existing guidelines are collected, prioritized and quantified with regard to their relevance for a robust production. To quantify the guidelines, test specimens are developed, produced and evaluated in order to obtain a limit value for the geometric properties. With these limit values, quantifiable design guidelines can be applied to designers and software tools.
Method for a Software-Based Design Check of Additively Manufactured Components
(University of Texas at Austin, 2018) Tominski, J.; Lammers, S.; Wulf, C.; Zimmer, D.
Additive manufacturing offers the potential to produce complex structures such as topology-optimized components or lattice structures. However, even these numerically generated structures are subject to manufacturing restrictions. Therefore, compliance with design rules has to be checked to ensure a robust production. For complex structures, this check requires a great effort. Hence, a method for a software-based design check that automatically verifies the compliance with design rules of complex structures has to be developed. Within the framework of the developed method, the frequently used STL format which is usually applied during preparation of the manufacturing process, is used. This format approximates components using triangles. By systematically linking these triangles, geometrical attributes of components which are relevant for a controlled manufacturing can be identified. Comparing these attributes to a database containing attribute limits of divergent manufacturing conditions allows a design check regarding robust manufacturing processes.