Evaluierung unterschiedlicher Theorien zur Berechnung beanspruchungsgerechter Faserorientierungen in CFK-Strukturen

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Details zur Publikation

Autorinnen und Autoren: Klein D, Caballero S, Wartzack S
Verlag: TuTech Verlag
Verlagsort: Hamburg
Jahr der Veröffentlichung: 2013
Tagungsband: Design for X. Beiträge zum 24. DfX-Symposium
Seitenbereich: 231-242
ISBN: 978-3-941492-63-9
Sprache: Deutsch


Abstract


A Young’s Modulus of up to 100 GPa, high strength and low density are only a few features that make carbon fiber reinforced plastic (CFRP) an ideal material for lightweight constructions. But the potential of CFRP can only be exploited if the fibers are oriented correctly. It is shown in this article that a deviation of only 10° from the ideal fiber orientation leads to a decrease of nearly 40 % in relative stiffness. Furthermore analytical methods to compute the fiber orientation within lightweight structures are only appropriate for geometrically less complex structures. Therefore, two different theories to computationally determine the ideal fiber orientation within structures made of CFRP are introduced. The first one is the load path theory developed by KELLY who originally wanted to visualize load paths within structures and the other is the CAIO method which imitates the adaptive growth of trees. After a short comparison of these different theories with the help of Mohr’s circle the fiber orientation within a b-pillar is computed according to both theories and evaluated with respect to its mechanical behavior. It can be shown that in the case of the b-pillar the fiber orientation according to the CAIO method leads to higher part stiffness and a lower Puck criterion. Additionally a few negative aspects of the load path theory that occur during the design process are pointed out.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Klein, Daniel
Lehrstuhl für Konstruktionstechnik
Wartzack, Sandro Prof. Dr.-Ing.
Lehrstuhl für Konstruktionstechnik


Zitierweisen

APA:
Klein, D., Caballero, S., & Wartzack, S. (2013). Evaluierung unterschiedlicher Theorien zur Berechnung beanspruchungsgerechter Faserorientierungen in CFK-Strukturen. In Design for X. Beiträge zum 24. DfX-Symposium (pp. 231-242). Hamburg, DE: Hamburg: TuTech Verlag.

MLA:
Klein, Daniel, Steffen Caballero, and Sandro Wartzack. "Evaluierung unterschiedlicher Theorien zur Berechnung beanspruchungsgerechter Faserorientierungen in CFK-Strukturen." Tagungsband Design for X. 24. DfX-Symposium, Hamburg Hamburg: TuTech Verlag, 2013. 231-242.

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