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 |
Prediction of process-induced deformations in thermoset composites using a higher-order FE-based ICME framework |
Author(s) |
Manish Nagaraj, Marianna Maiaru |
On-Site Speaker (Planned) |
Manish Nagaraj |
Abstract Scope |
The manufacture of fiber-reinforced thermoset polymer composites under applied temperature and pressure cycles leads to the development of residual stresses, which can affect the composite at multiple length-scales. Cure-induced residual stresses can cause cracks to develop within the composite microstructure, thereby impacting the mechanical properties of the cured material. At the structural scale, residual stresses cause deformations in the manufactured part which can affect the part geometry and lead to issues during assembly. It therefore becomes important to consider material-processing-structure interactions during the design of composite structures, and is a core philosophy of the Integrated Computational Materials Engineering (ICME) approach to composites design.
The present work focuses on the effects of composite manufacturing on the final part geometry, specifically the prediction of cure-induced deformations within the composite structure. A novel computational framework is developed, considering ICME principles, and incorporates thermoset process modeling to simulate the composite curing process. The structural modeling is based on higher-order theories derived from the Carrera Unified Formulation and is implemented in the form of higher-order finite elements. This results in a high-fidelity numerical model with significantly reduced computational overheads compared to conventional finite elements. Numerical assessments are performed, and the predicted results are shown to correlate very well with reference experimental data, thereby validating the proposed model and demonstrating its accuracy. This work represents a milestone towards the development of a high-fidelity and efficient ICME framework applied to fiber-reinforced composites. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |