| 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 |
Computational Exploration of the Mechanical Behavior of High-Performance Epoxy |
| Author(s) |
Sagar Umesh Patil, Sagar Shah, Marianna Maiaru, Gregory Odegard |
| On-Site Speaker (Planned) |
Sagar Umesh Patil |
| Abstract Scope |
Thermosetting polymer matrix composites (PMC’s) are extensively used for aerospace structural applications due to their low density, high specific strength, and stiffness. Despite their popularity, predicting the polymer matrix composite (PMC) thermo-mechanical responses as a function of processing parameters is challenging due to their complex multiscale nature. The process-induced uncertainties have a significant impact on their thermo-mechanical properties. Multiscale computational process modeling can provide valuable insight into physical phenomena that influence the composite thermo-mechanical response and establish a processing-microstructure-property correlation.
In this study, molecular dynamics (MD) simulations are carried out to evaluate the physical and thermo-mechanical properties of a toughened epoxy system, Toray 3900 (T3900). Using the Interface Force Field (IFF), the properties are computed for a range of crosslinking densities (from uncrosslinked state to fully-crosslinked state) and validated against experimental data. The predicted properties include mass density, post-gelation volumetric shrinkage, elastic constants such as bulk modulus, shear modulus, Young’s modulus, Poisson’s ratio, yield strength, glass transition temperature, coefficient of thermal expansion. These properties are predicted at room temperature and processing temperature.
This work presents an MD workflow to predict accurate and comprehensive set of material property data for T3900 epoxy. These properties will eventually be used as inputs into microscale analysis to predict residual stress development in composite laminates. This is the first step in the multiscale approach proposed for process modeling of composites using the ICME principles. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |