HOSSnet: an Efficient Physics-Guided Neural Network for Simulating Crack Propagation
This work addresses the computational cost of fracture simulations for materials science and engineering, though it is incremental as it builds on existing physics-based and machine learning methods.
The paper tackled the problem of computationally expensive high-fidelity crack propagation simulations by developing a physics-guided neural network, HOSSnet, which accurately reconstructs fracture data in space and time, achieving low pixel-wise error and high structural similarity.
Hybrid Optimization Software Suite (HOSS), which is a combined finite-discrete element method (FDEM), is one of the advanced approaches to simulating high-fidelity fracture and fragmentation processes but the application of pure HOSS simulation is computationally expensive. At the same time, machine learning methods, shown tremendous success in several scientific problems, are increasingly being considered promising alternatives to physics-based models in the scientific domains. Thus, our goal in this work is to build a new data-driven methodology to reconstruct the crack fracture accurately in the spatial and temporal fields. We leverage physical constraints to regularize the fracture propagation in the long-term reconstruction. In addition, we introduce perceptual loss and several extra pure machine learning optimization approaches to improve the reconstruction performance of fracture data further. We demonstrate the effectiveness of our proposed method through both extrapolation and interpolation experiments. The results confirm that our proposed method can reconstruct high-fidelity fracture data over space and time in terms of pixel-wise reconstruction error and structural similarity. Visual comparisons also show promising results in long-term