Recurrent neural networks and transfer learning for elasto-plasticity in woven composites
This work addresses path-dependent response modeling in woven composites, which is incremental as it applies existing RNN and transfer learning methods to a specific domain.
The paper tackled the problem of computationally intensive meso-scale simulation of woven composites by developing Recurrent Neural Network (RNN) models with transfer learning, resulting in effective adaptation to varying strain conditions for accurate stress predictions under cyclic loading.
As a surrogate for computationally intensive meso-scale simulation of woven composites, this article presents Recurrent Neural Network (RNN) models. Leveraging the power of transfer learning, the initialization challenges and sparse data issues inherent in cyclic shear strain loads are addressed in the RNN models. A mean-field model generates a comprehensive data set representing elasto-plastic behavior. In simulations, arbitrary six-dimensional strain histories are used to predict stresses under random walking as the source task and cyclic loading conditions as the target task. Incorporating sub-scale properties enhances RNN versatility. In order to achieve accurate predictions, the model uses a grid search method to tune network architecture and hyper-parameter configurations. The results of this study demonstrate that transfer learning can be used to effectively adapt the RNN to varying strain conditions, which establishes its potential as a useful tool for modeling path-dependent responses in woven composites.