Details
| Original language | English |
|---|---|
| Title of host publication | Composites meet sustainability |
| Subtitle of host publication | Proceedings of the 20th European Conference on Composite Materials ECCM20 |
| Editors | Anastasios P. Vassilopoulos, Veronique Michaud |
| Pages | 710-717 |
| Number of pages | 8 |
| Volume | 4 – Modeling and Prediction |
| ISBN (electronic) | 9782970161400 |
| Publication status | Published - 2022 |
| Event | 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022 |
Abstract
Reduced representations of stiffened shell structures are required for an efficient FEbased evaluation of different unconventional fuselage stiffener layouts for example in layout optimizations. The use of omega profiles adapted to fiber placement technologies introduces additional challenges. Three different modeling approaches are introduced, each combining a numerical and an analytical model. Two approaches are based on existing numerical models and are combined with analytical models. In the novel third approach, extra shell elements to explicitly model the width of the omega stiffener are added. In an evaluation, the calculated displacements of four characteristic load cases for different wide omega profiles are compared to a reference. The results show small deviations for the new modeling approach. Under tension and bending loads, mean deviations below 1 % are achieved. For torsional loads, the mean deviation can be reduced to 3 % compared to 30 % using a conventional approach.
Keywords
- composite design, FE-modeling, shell structures, fuselage structure, omega stiffener
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
Composites meet sustainability: Proceedings of the 20th European Conference on Composite Materials ECCM20. ed. / Anastasios P. Vassilopoulos; Veronique Michaud. Vol. 4 – Modeling and Prediction 2022. p. 710-717.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Investigation of novel FE-based modelling approaches for stiffened CFRP aircraft structures
AU - Reichert, L.
AU - Tiemann, T.
AU - Schmidt, C.
AU - Heimbs, S.
AU - Horst, P.
N1 - Acknowledgements The authors would like to thank the German Research Foundation for the support of the project Layout Topology Optimization of Unconventionally Stiffened CFRP-Structures Considering Manufacturing Constraints (OptiFee, HO 2122/33-1).
PY - 2022
Y1 - 2022
N2 - Reduced representations of stiffened shell structures are required for an efficient FEbased evaluation of different unconventional fuselage stiffener layouts for example in layout optimizations. The use of omega profiles adapted to fiber placement technologies introduces additional challenges. Three different modeling approaches are introduced, each combining a numerical and an analytical model. Two approaches are based on existing numerical models and are combined with analytical models. In the novel third approach, extra shell elements to explicitly model the width of the omega stiffener are added. In an evaluation, the calculated displacements of four characteristic load cases for different wide omega profiles are compared to a reference. The results show small deviations for the new modeling approach. Under tension and bending loads, mean deviations below 1 % are achieved. For torsional loads, the mean deviation can be reduced to 3 % compared to 30 % using a conventional approach.
AB - Reduced representations of stiffened shell structures are required for an efficient FEbased evaluation of different unconventional fuselage stiffener layouts for example in layout optimizations. The use of omega profiles adapted to fiber placement technologies introduces additional challenges. Three different modeling approaches are introduced, each combining a numerical and an analytical model. Two approaches are based on existing numerical models and are combined with analytical models. In the novel third approach, extra shell elements to explicitly model the width of the omega stiffener are added. In an evaluation, the calculated displacements of four characteristic load cases for different wide omega profiles are compared to a reference. The results show small deviations for the new modeling approach. Under tension and bending loads, mean deviations below 1 % are achieved. For torsional loads, the mean deviation can be reduced to 3 % compared to 30 % using a conventional approach.
KW - composite design
KW - FE-modeling, shell structures
KW - fuselage structure
KW - omega stiffener
UR - http://dx.doi.org/10.5075/epfl-298799_978-2-9701614-0-0
UR - http://www.scopus.com/inward/record.url?scp=85149362908&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85149362908
VL - 4 – Modeling and Prediction
SP - 710
EP - 717
BT - Composites meet sustainability
A2 - Vassilopoulos, Anastasios P.
A2 - Michaud, Veronique
T2 - 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Y2 - 26 June 2022 through 30 June 2022
ER -