Modular rapid design of multi-material lightweight truss structures – A novel approach

Beitrag bei einer Tagung
(Konferenzbeitrag)


Details zur Publikation

Autor(en): Rathert T, Witzgall C, Wartzack S
Herausgeber: Ermanni, Paolo; Meboldt, Mirko; Wartzack, Sandro; Krause, Dieter; Zogg, Markus
Jahr der Veröffentlichung: 2018
Tagungsband: Book of Abstracts. Symposium Lightweight Design in Product Development, Zurich
Seitenbereich: 21-23
Sprache: Englisch


Abstract



The
specification of an ideal lightweight design with minimal weight and maximum
utilization of the material is often restricted by economic factors. Taking
this into account, only an optimized lightweight design can be realized. When
utilizing modern composite materials, the design and manufacturing methods are
poorly standardized and their implementation usually causes high costs in
design and production. Besides that the composite suitability of framework structures
– which could be standardized – is only given for uniaxial loaded sections,
whereas the connector regions are subject to a (at least) biaxial stress state that
is very unfavorable for composite materials. As a consequence it is
often advisable to use a multi-material design – also known as hybrid design. The
best properties of different materials are combined here, while keeping the
economic impact as low as possible. Each individual element of the hybrid
structure offers a basic local solution, but in addition they can achieve optimization
in a combined state. The main
objective of this contribution is to show how to simply use the right material
in the right place, thus allowing to optimally exploiting their beneficial
lightweight properties and keeping the costs as low as possible. Therefore a
methodology is presented, which allows the dimensioning and optimization of
multi-material lightweight design systems inside a restricted design space by
using modular and rapid building blocks. This enables the product developer to
design an optimal framework topology by using a discrete optimization approach
and afterwards dimension anisotropic composite tubes for the sections of
uniaxial stresses and isotropic connectors to join them. The calculated
information is then transferred to the CAD‑System to directly create the
product’s embodiment design by using standardized composite profiles and aluminum
connectors. Finally using
the demonstrator of a motorcycle frame, the method will be evaluated and
discussed.


FAU-Autoren / FAU-Herausgeber

Stangl, Thomas
Lehrstuhl für Konstruktionstechnik
Wartzack, Sandro Prof. Dr.-Ing.
Lehrstuhl für Konstruktionstechnik
Witzgall, Christian
Lehrstuhl für Konstruktionstechnik


Zitierweisen

APA:
Rathert, T., Witzgall, C., & Wartzack, S. (2018). Modular rapid design of multi-material lightweight truss structures – A novel approach. In Ermanni, Paolo; Meboldt, Mirko; Wartzack, Sandro; Krause, Dieter; Zogg, Markus (Eds.), Book of Abstracts. Symposium Lightweight Design in Product Development, Zurich (pp. 21-23). Zürich, CH.

MLA:
Rathert, Thomas, Christian Witzgall, and Sandro Wartzack. "Modular rapid design of multi-material lightweight truss structures – A novel approach." Proceedings of the 1st Symposium for Lightweight Design and Product Development, Zürich Ed. Ermanni, Paolo; Meboldt, Mirko; Wartzack, Sandro; Krause, Dieter; Zogg, Markus, 2018. 21-23.

BibTeX: 

Zuletzt aktualisiert 2018-04-09 um 11:02