| 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 |
Fatigue Simulation for Damage Accumulation in Laminated Composites Using Microscopic Model and CZM-Based Extended Finite Element Method |
| Author(s) |
Rong-Can Hong, Ryo Higuchi, Xin Lu, Tomohiro Yokozeki |
| On-Site Speaker (Planned) |
Rong-Can Hong |
| Abstract Scope |
This paper presents a novel numerical method for evaluating fatigue damage accumulation in laminated composites with multiple cracks. A microscopic fatigue model based on the cohesive zone model (CZM) is incorporated into the numerical scheme instead of the conventional Paris law. The integration of the extended finite element method (XFEM) and cohesive elements within the numerical framework enables comprehensive fatigue fracture analysis. Specifically, XFEM and cohesive elements are employed to model matrix cracking and delamination, respectively, in laminated composites. Fatigue model parameters are calibrated using finite element simulation and standard fatigue tests such as the double cantilever beam and end-notched flexure tests. An interpolation equation is proposed for determining mixed mode parameters from the pure mode calibration results. Subsequently, using the calibrated parameters, the numerical analysis of the open-hole tensile (OHT) test is conducted to explore fracture behaviors under cyclic loading conditions. The numerical damage patterns of interlaminar and intralaminar cracks are consistent with previous experimental findings. Furthermore, the predicted fatigue life falls within the range of referenced experimental data. This study demonstrates that the proposed numerical method can correctly predict the fatigue initiation and evolution of multi-cracks under mixed mode loading. Using XFEM, intralaminar and matrix cracking can be represented as multiple, mesh-independent paths within the finite element model. This paper introduces an effective approach utilizing the capabilities of XFEM to simulate multiple fatigue cracks in composite laminates. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |