| 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 |
Modeling the Deformation and Failure of 3D Woven CNT Composites |
| Author(s) |
Riza Kaan Gonuleri, Ibrahim Guven |
| On-Site Speaker (Planned) |
Ibrahim Guven |
| Abstract Scope |
Carbon nanotube (CNT)-based yarns are ideal fibrous components to use in 3D woven composites due to their low bending rigidity owing to the hierarchical nano, micro, and meso-scale structures. Unlike carbon fibers, yarns can be tailored to have custom cross-sections and combined to make various diameter tows before resin infusion. The customizability of the yarn and tows, combined with the hierarchical structure, allows for sharp turns necessary for tightly packed 3D woven composites. Similarly, the aforementioned customizability also allows the tuning of multi-scale geometric features to optimize select mechanical properties. Such a process would require high-fidelity, multi-scale modeling and simulation of deformation and failure of 3D woven CNT composites.
In this study, computational predictions of elastic and failure properties of 3D woven CNT composites are presented. A two-stage finite element method (FEM)-based micromechanics approach for the elastic orthotropic properties was utilized. The first stage analysis predicts the properties of the tow, which is composed of multiple CNT yarns. In the second stage, a 3D representative volume element (RVE) was subjected to micromechanics analysis to predict the elastic orthotropic properties of the 3D woven composite. A separate analysis approach based on peridynamics was used to simulate the progressive failure of the 3D woven composite under tensile and shearing loading conditions. Both the elastic and failure analyses were performed with and without internal voids. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |