3 papers
physics.comp-ph2026
Optimal Uncertainty Quantification under General Moment Constraints on Input Subdomains
Rong Jin, Xingsheng Sun
We present an optimal uncertainty quantification (OUQ) framework for systems whose uncertain inputs are characterized by truncated moment constraints defined over subdomains. Based…
cond-mat.mtrl-sci2026
Ensemble-Based Data Assimilation for Material Model Characterization in High-Velocity Impact
Rong Jin, Guangyao Wang, Xingsheng Sun
High-fidelity simulations are essential for predicting material behavior under high-velocity impact (HVI), but their accuracy depends on material models and parameters that are oft…
cond-mat.mtrl-sci2024
Size and Shape Dependence of Hydrogen-Induced Phase Transformation and Sorption Hysteresis in Palladium Nanoparticles
Xingsheng Sun, Rong Jin
We establish a computational framework to explore the atomic configuration of a metal-hydrogen (M-H) system when in equilibrium with a H environment. This approach combines Diffusi…