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- Fermi National Accelerator LaboratoryUS587 papers
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54 papers · 1 filter
Phase-Field Modeling of Fracture under Compression and Confinement in Anisotropic Geomaterials
Maryam Hakimzadeh, Carlos Mora-Corral, Noel Walkington +2
Strongly anisotropic geomaterials undergo fracture under compressive loading. This paper applies a phase-field fracture model to study this fracture process. While phase-field frac…
Autonomous Minibus Service with Semi-on-demand Routes in Grid Networks
Max T. M. Ng, Hani S. Mahmassani
This paper investigates the potential of autonomous minibuses which take on-demand directional routes for pick-up and drop-off in a grid network of wider area with low density, fol…
How Well Did U.S. Rail and Intermodal Freight Respond to the COVID-19 Pandemic vs. the Great Recession?
Max T. M. Ng, Joseph Schofer, Hani S. Mahmassani
This paper analyzes and compares patterns of U.S. domestic rail freight volumes during, and after the disruptions caused by the 2007-2009 Great Recession and the COVID-19 pandemic…
Highway Managed Lane Usage and Tolling for Mixed Traffic Flows with Connected Automated Vehicles (CAVs) and High-Occupancy Vehicles (HOVs)
Max T. M. Ng, Hani S. Mahmassani
This paper investigates managed lane (ML) toll setting and its effect under mixed traffic of connected automated vehicles (CAVs), high-occupancy vehicles (HOVs), and human-driven v…
Macroscopic stress, couple stress and flux tensors derived through energetic equivalence from microscopic continuous and discrete heterogeneous finite representative volumes
Jan Eliáš, Gianluca Cusatis
This paper presents a rigorous derivation of equations to evaluate the macroscopic stress tensor, the couple stress tensor, and the flux vector equivalent to underlying microscopic…
Trading Off Energy Storage and Payload -- An Analytical Model for Freight Train Configuration
Max T. M. Ng, Adrian Hernandez, Pablo L. Durango-Cohen +1
To support planning of alternative fuel technology (e.g., battery-electric locomotives) deployment for decarbonizing non-electrified freight rail, we develop a convex optimization…