| 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 |
Multiscale and Multifidelity Modeling of a 3D Woven Composite Thermal Protection System |
| Author(s) |
Trenton Ricks, Brett Bednarcyk, Subodh Mital, Sergio Fraile Izquierdo, Lauren Abbott |
| On-Site Speaker (Planned) |
Trenton Ricks |
| Abstract Scope |
Complex three-dimensional (3D) woven composites have been considered by multiple NASA projects in recent years as a means of offering improved mechanical and thermal performance over traditional laminated composite systems. Parallel efforts have focused on developing simulation capabilities for these systems which have traditionally and heavily relied on experimental testing to evaluate composite performance. One system is the Heatshield for Extreme Entry Environment Technology (HEEET) which is being considered for the thermal protection system on reentry spacecraft. A portion of HEEET insulation layer was previously imaged with high-resolution x-ray computed tomography (CT) and segmented to separate fiber tows, porous matrix, and voids. Optical microscopy was used to characterize the blended carbon and phenolic fiber tows. These data were used to develop synergistic multiscale and multifidelity thermomechanical computational models within the NASA Multiscale Analysis Tool (NASMAT). Two NASMAT modeling approaches were considered to capture the details of the 3D woven architecture: a coarse model appropriate for inclusion in multiscale structural analyses and a high-fidelity model created by downsampling the raw x-ray CT data. Both elastic and thermal properties were computed and compared to analogous hierarchical multiscale simulations performed using the Porous Microstructure Analysis (PuMA) software. Additionally, multiscale progressive damage and failure simulations were performed with NASMAT. The feasibility and challenges associated with modeling complex, hybrid 3D woven composites were also addressed. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |