Sponsor: Predictive Science Academic Alliance Program (PSAAP), ASC-NNSA-DOE 

Duration: 7/1/2020 - 6/30/2025

Role: Senior Personnel

Objectives

The overall objective of the Center is to simulate with quantified uncertainty, from pore-particle-to-continuum-scales, a class of problems involving granular flows, large deformations, and fracture/fragmentation of unbonded and bonded particulate materials, as well as porous cellular materials. The Center research will usher in a new era of higher fidelity multiscale multiphysics computation through large deformation micromorphic continuum field theories informed by DNS through the latest ML techniques calibrated and validated against a rich experimental data set. Our group's role in this project is to perform experimental (at macroscale) and theoretical mechanics (at continuum level) research on the thermomechanical behavior of bonded granular materials with the scope of energy and defense applications. 

Collaborators

See PSAAP project webpage.

Publications

Wen, Y.†, Zhang, Y.* (2024) Fabric-based jamming phase diagram for frictional granular materials. Soft Matter 20, 3175-3190, DOI: 10.1039/D3SM01277H.

Wang, Y. ††, Zhang, Y.* (2023) Effect of relative humidity on the creep rate of rock salts at low stress regime. Rock Mechanics and Rock Engineering 56(12), 8711-8721, DOI: 10.1007/s00603-023-03518-6.

Zhang, Y.*, Singh, S.†, Wen, Y.† (2024). Breakage and permeability reduction of tailings sand under high-pressure oedometric compression and creep. In Geo-Congress 2024, Vancouver, Canada.