[HTML][HTML] A theoretical case study of the generalization of machine-learned potentials

Y Wang, S Patel, C Ortner - Computer Methods in Applied Mechanics and …, 2024 - Elsevier
Abstract Machine-learned interatomic potentials (MLIPs) are typically trained on datasets
that encompass a restricted subset of possible input structures, which presents a potential …

Qm/mm methods for crystalline defects. part 3: machine-learned mm models

H Chen, C Ortner, Y Wang - Multiscale Modeling & Simulation, 2022 - SIAM
We develop and analyze a framework for consistent QM/MM (quantum/classic) hybrid
models of crystalline defects, which admits general atomistic interactions including …

A fast front-tracking approach and its analysis for a temporal multiscale flow problem with a fractional order boundary growth

Z Wang, P Lin, L Zhang - SIAM Journal on Scientific Computing, 2023 - SIAM
This paper is concerned with a blood flow problem coupled with a slow plaque growth at the
artery wall. In the model, the micro (fast) system is the Navier–Stokes equation with a …

Efficient a posteriori error control of a concurrent multiscale method with sharp interface for crystalline defects

Y Wang, H Wang - Journal of Scientific Computing, 2023 - Springer
We present an efficient a posteriori error control strategy for an energy-based concurrent
multiscale method with sharp interface in molecular mechanics, namely the geometric …

MeshAC: A 3D Mesh Generation and Adaptation Package for Multiscale Coupling Methods

K Fu, M Liao, Y Wang, J Chen, L Zhang - Computer Physics …, 2025 - Elsevier
This paper introduces the MeshAC package, which generates three-dimensional adaptive
meshes tailored for the efficient and robust implementation of multiscale coupling methods …

Adaptive Multiscale Coupling Methods of Molecular Mechanics based on a Unified Framework of a Posteriori Error Estimates

H Wang, Y Wang - arxiv preprint arxiv:2309.13255, 2023 - arxiv.org
Multiscale coupling methods are significant methodologies for the modeling and simulation
of materials with defects, intending to achieve the (quasi-) optimal balance of accuracy and …

A posteriori error estimate and adaptivity for QM/MM models of crystalline defects

Y Wang, JR Kermode, C Ortner, L Zhang - Computer Methods in Applied …, 2024 - Elsevier
Hybrid quantum mechanics/molecular mechanics (QM/MM) models play a pivotal role in
molecular simulations. These models provide a balance between accuracy, surpassing pure …

Efficient a posteriori error control of a consistent atomistic/continuum coupling method for two dimensional crystalline defects

Y Wang, H Wang - arxiv preprint arxiv:2211.14143, 2022 - arxiv.org
Adaptive atomistic/continuum (a/c) coupling method is an important method for the
simulation of material and atomistic systems with defects to achieve the balance of accuracy …

A Posteriori Analysis and Adaptive Algorithms for Blended Type Atomistic-to-Continuum Coupling with Higher-Order Finite Elements

Y Wang - arxiv preprint arxiv:2308.16467, 2023 - arxiv.org
The efficient and accurate simulation of material systems with defects using atomistic-to-
continuum (a/c) coupling methods is a topic of considerable interest in the field of …

Higher order far-field boundary conditions for crystalline defects

J Braun, C Ortner, Y Wang, L Zhang - arxiv preprint arxiv:2210.05573, 2022 - arxiv.org
Lattice defects in crystalline materials create long-range elastic fields that can be modeled
on the atomistic scale. The low rank structures of defect configurations are revealed by a …