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 |
Multi-scale Finite Element modelling of the tensile behavior of pseudo-ductile composites |
Author(s) |
Sayyed Behzad Abdellahi, Fatemeh Azhari, Phu Nguyen |
On-Site Speaker (Planned) |
Fatemeh Azhari |
Abstract Scope |
The hybridization technique has recently emerged as a method to create a new class of composites known as pseudo-ductile composites. These innovative materials exhibit greater resilience to failure compared to traditional composites, reducing the risk of catastrophic breakdowns. As a result, they find applications across various engineering fields.
In this study, a multi-scale finite element (FE) model is proposed to predict the tensile behavior of pseudo-ductile composites. Using Representative Volume Element (RVE) models at the micro-scale, mechanical properties such as elasticity and failure parameters are assigned to each component. A UMAT subroutine was developed to simulate fiber failure, and periodic boundary conditions (PBCs) were applied using the ABAQUS FE software package.
Tensile loads in different directions were applied to analyze the elastic and damage parameters of each layer in the composite. At the macro-scale, a composite with 7 plies was simulated, incorporating data from the micro-scale models. Hashin damage criteria were utilized to simulate damage progression in different plies of the composite.
Validation of the FE model involved comparison with experimental results. The predicted stress-strain curve accurately captures the pseudo-ductile behavior observed in experiments, with a gradual fiber failure pattern evident in the middle ply. This confirms the reliability of our model in predicting the mechanical response of pseudo-ductile composites. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |