Jäger M, Wartzack S (2022)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2022
Original Authors: Michael Jäger, Sandro Wartzack
Series: Light Weight Design
Pages Range: 1-12
Conference Proceedings Title: Proceedings of the Munich Symposium on Lightweight Design 2021
ISBN: 9783662652152
DOI: 10.1007/978-3-662-65216-9_1
Open Access Link: https://link.springer.com/chapter/10.1007/978-3-662-65216-9_1
Spatial truss structures are a stiff, economical, and effective lightweight design method, especially when using composites instead of isotropic materials for the struts. An efficient computation of these structures is crucial for optimization approaches during the product design process. The most common method for computing spatial truss structures relies on hinged connections with tension/compression-only struts, which ignores the bending and coupling effects of composite beams. However, especially when using asymmetric laminates, these effects are no longer neglectable. Within commercial finite element tools, the computation of large truss structures - which include these effects - is a very time-consuming process. Particularly for slender, thin-walled beams a large number of solid/shell elements is required. In this paper, an analytical solution of the stiffness matrix for a tube-shaped thin-walled composite beam is provided. It is based on the classical laminate plate theory and Timoshenko’s exact solutin including shear deformation and coupling effects. By using three-dimensional exact Timoshenko beam elements, the number of degrees of freedom can be reduced significantly while coupling effects are maintained. This results in a remarkably lower computation time especially needed for topology optimization. The results are compared to a commercial finite element tool using both solid and shell elements.
APA:
Jäger, M., & Wartzack, S. (2022). Efficient Computation of Spatial Truss Structures for Design Optimization Approaches Using Tube-Shaped Thin-Walled Composite Beams. In Proceedings of the Munich Symposium on Lightweight Design 2021 (pp. 1-12).
MLA:
Jäger, Michael, and Sandro Wartzack. "Efficient Computation of Spatial Truss Structures for Design Optimization Approaches Using Tube-Shaped Thin-Walled Composite Beams." Proceedings of the Proceedings of the Munich Symposium on Lightweight Design 2021 2022. 1-12.
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