Konzept einer CAE-Methode zur systematischen Auslegung beanspruchungsgerechter; kurzfaserverstärkter AM-Fachwerksknoten für hochoptimierte Fachwerke

Proceedings of the 31st Symposium Design for X (DFX2020)

Year: 2020
Editor: Dieter Krause; Kristin Paetzold; Sandro Wartzack
Author: Jäger, Michael; Völkl, Harald; Wartzack, Sandro
Series: DfX
Institution: Engineering Design; Friedrich-Alexander-Universität Erlangen-Nürnberg
Section: Lightweight Design
Page(s): 131-140
DOI number: https://doi.org/10.35199/dfx2020.14

Abstract

Trusses represent an economical, rigid and effective lightweight construction method. However, the connecting parts (nodes) between the struts are a design challenge, especially in highly optimized trusses. Several struts with different geometries (diameter, cross-sections) must be connected at any spatial angle in one point in a manner that is suitable for the load. The use of fibre-reinforced materials for the struts is common practice, for the nodes, metals are usually used. However, these do not exploit the full lightweight construction potential of the truss. The proposed method allows the design of truss nodes using fibre-reinforced materials and additive manufacturing, while taking into account the geometric boundary conditions of the connection points for the struts.

Keywords: Structural optimization; CFRP truss; lightweight design; short fibre reinforced plastics

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