报告摘要
This talk presents a recently developed novel periporomechanics paradigm for modeling localized failure (e.g., shear banding) and multi-physics (e.g., solid deformation and pore fluid flow) in continuous/fracturing geomaterials. Periporomechanics (PPM) is a nonlocal formulation of classical continuum poromechanics through the notions of effective force and peridynamic state. The governing equations are integral-differential equations in lieu of partial differential equations. The stabilized constitutive correspondence principle has been formulated to incorporate advanced inelastic constitutive models for geomaterials in PPM. As a novelty, progressive failure and cracking of porous media can occur naturally following the governing equations and constitutive models without a prior criterion. Both total and updated Eulerian-Lagrangian meshless and implicit/explicit fractional-step methods have been used to numerically implement this nonlocal multiphysics paradigm in space and time for high-performance computing. Numerical examples will be presented to demonstrate the robustness and efficacy of this new PPM paradigm in modeling localized failure, large deformation, and multiphysics in geomaterials, which have practical applications in coastal, energy, environmental, and hazard geotechnics.
主讲人简介
Dr. Song is an associate professor in the Department of Civil and Coastal Engineering at the University of Florida and a licensed PE (Florida). He holds a PhD from Stanford University, an MS from Georgia Institute of Technology, and a BS from Tongji University, all in civil engineering. Song’s research interests lie in computational, theoretical, and physical modeling of instability, fracture, and multi-physics of variably saturated geomaterials harnessing HPC, remote and fiber optic sensing, 3D printing, AI/ML/DL/DT, large-scale soil-box and geo-centrifuge testing, and wind tunnel testing. His research has been supported by NSF, FDOT, and UF HiPerGator supercomputer, including an NSF CAREER award on computational unsaturated geomechanics. He serves on the ASCE Geo-Institute (GI) Board-Level Technical Publications Committee and the Secretary of the GI Shallow Foundations Committee. He is an associate editor/editorial board member of several high-impact journals, including the Journal of Rock Mechanics and Geotechnical Engineering, Bulletin of Engineering Geology and the Environment, and Computers and Geotechnics.
协办单位：浙江大学岩土工程计算中心、浙江省力学学会岩土力学与工程专业委员会、浙江省岩土力学与工程学会本构理论与数值分析专业委员会、浙江省土木建筑学会土力学及岩土工程学术委员会、浙江省岩土力学与工程学会交通岩土工程专业委员会