| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Rapid Process Modeling and Residual Stress Evaluation of 3D-Woven CNT/Epoxy Composites via Higher-Order FE Modeling |
| Author(s) |
Manish Nagaraj, Riza Gonuleri, Sagar U Patil, Ibrahim Guven, Gregory M Odegard, Marianna Maiaru |
| On-Site Speaker (Planned) |
Manish Nagaraj |
| Abstract Scope |
The high specific mechanical properties of carbon nanotubes make them promising candidates as reinforcements in next-generation ultra high strength composites for use in space-flight applications. However, the full potential of such a composite material class has not yet been realized. One such barrier is the effect of the manufacturing process, wherein the fabrication of polymer-based composites under prescribed cure cycles can lead to the accumulation of residual stresses within the composite part. These stresses arise due to factors such as chemical shrinkage of the thermosetting matrix and a mismatch in the constituent thermo-mechanical properties, and can negatively impact the mechanical performance of the composite. Accounting for process-induced effects is therefore an important aspect of designing performant CNT/epoxy composites. The present work investigates residual stress development in 3D-woven CNT/epoxy composites during the curing process. A computationally efficient process simulation framework is developed using higher-order finite elements derived from the Carrera Unified Formulation. Numerical assessments are performed using this framework to simulate the processing of 3D-woven composites, at the meso-scale, to evaluate both material property evolution and residual stress development during cure. The capabilities of the proposed computational framework in quantifying residual stresses enable the determination of optimal processing parameters to improve the mechanical response of the fabricated composite part. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |