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Simulating Knoop hardness anisotropy of aluminum and β-HMX with a crystal plasticity finite element model
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Finite Element Model for Air Permeability of Cracked Reinforced Concrete Plates
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Finite element modeling of electropolishing of radio frequency dipole Nb crab cavity in hydrofluoric-sulfuric acid electrolyte
The superior performance of niobium superconducting radio frequency (SRF) cavities is achieved through meticulous surface treatment, notably via chemical electropolishing, ensuring exceptionally smooth surfaces. While this technique has been extensively employed for cylindrically symmetric structures, addressing more intricate geometries poses significant challenges in achieving uniform polishing and controlled material removal, especially when moving away from retractable cathodes. This presents a multifaceted electrochemical, thermal, and fluid dynamics conundrum. A prime example is the 197 MHz radio frequency dipole (RFD) crabbing cavity proposed for the Electron Ion Collider (EIC) project, exemplifying such complex structures. Our groundbreaking work integrates the localized oxide thickness variation, considering its impact on current distribution and Joule heating, within the framework of multi-physics modeling using the COMSOL® simulation suite. This approach was applied to a comprehensive model of the RFD cavity, allowing us to investigate optimal external cooling water flow conditions necessary for achieving desirable outcomes. In conclusion, this illustrates the increasing utility of such multi-physics codes to greatly aid in designing solutions to challenging processing requirements for increasingly complex accelerator cavities.
CU-BENs: A structural modeling finite element library
The present work discusses capabilities within the finite element library CU-BENs. CU-BENs focuses on applying the finite element method to structural mechanics problems encountered within the context of inverse problems and partitioned fluid–structure interaction; thus element formulations are primarily of a structural type — truss, frame, and triangular discrete Kirchhoff theory shells. CU-BENs defaults to the skyline sparse storage scheme for the system matrix, but also supports other storage schemes when using external libraries such as LAPACK and UMFPACK. CU-BENs includes built-in nonlinear solution strategies, such as the Newton Raphson method and modified spherical arc length method, that are available within static analyses as well within the context of transient dynamic analyses involving a generalized-α implementation of the Newmark implicit time integration scheme.
Involute Working Group – Development and Validation of the Finite Element Models of the Cheverton-Kelley Experiments
In an involute-plate reactor, the fuel plates and side-plates are subjected to a non-uniform distribution of loads. Temperature variation derives from a variation in power distribution throughout the core. Due to small imperfections in the channel thickness, the coolant flowing in between the plates produces pressure differentials with a non-uniform distribution on the plate surface. The main goal of the analysis presented in this technical report is to investigate the ability of the commercial software STAR-CCM+ to model deformation of involute plates subjected to mechanical and thermal loads, representative of involute reactor operation conditions.
Predicting Pit Stability On Additively Manufactured SS316 Via Finite Element Modeling (Initial Draft) [Slides]
The main objective of this work is to predict pit stability for a variety of conditions, to determine what parameters will have the most potent impact
Finite Element Model Levelling for Material Model Calibration using Digital Image Correlation.
Abstract not provided.
Validation of Finite Element Models for Puncture of Al7075 Plates of Various Thickness.
Abstract not provided.
Dead Ends and Challenges in Simplified Finite Element Modeling of a Resonant Plate.
Abstract not provided.
A Simplified Finite Element Model for Design of a Resonant Plate.
Abstract not provided.
ALEGRA: finite element modeling for shock hydrodynamics and multiphysics.
Abstract not provided.
Validation of a Finite Element Model of a Resonant Plate in the Shock Domain.
Abstract not provided.
BCC Ta single crystals during Taylor impact - Using a coupled dislocation dynamics and finite element model.
Abstract not provided.