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FINITE-ELEMENT DISTORED WAVE BORN APPROXIMATION FOR SURFACE SCATTERING
FE-DWBA is a software package that computes the x-ray scattering patterns of objects that locate on a surface or buried next to a surface, such as the nano-circuits and nano-patterns of the mask used in the extreme ultraviolet lithography. It can incorporate the dynamical scattering effect (photons scattered multiple times), which is predominant in surface scattering and yield high-fidelity scattering patterns. The application includes surface imaging using x-rays, and critical dimension determination for semiconductor manufacturing.
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.
Spectral Equivalence of Higher-Order Tensor Product Finite Elements and Applications to Preconditioning.
Abstract not provided.
Finite Element Tools for Performance Portability of Implicit and IMEX Simulations on Next Generation Architectures.
Abstract not provided.
Deriving Transmissibility Functions from Finite Elements for Specifications - Slides.
Abstract not provided.
Projection-based model reduction for finite-element simulations of thermal protection systems.
Abstract not provided.
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
Spectral Equivalence Properties of Higher-Order Tensor Product Finite Elements and Applications to Preconditioning.
Abstract not provided.
Exploiting Tensor-Product Structure in High-Order Finite Elements on Next-Generation Architectures.
Abstract not provided.
Improved Plasticity and Damage Models By Symbolic Regression of Microscale Finite Element Simulations.
Abstract not provided.
Finite Element Simulation of the Acoustic Pressure Inside a Beverage Container for Non-Thermal, Ultrasound-based Pasteurization
The purpose of this effort is to investigate whether large acoustic pressure waves can be transmitted inside beverage containers to enable pasteurization. Acoustic waves are known to induce large nonlinear compressive forces and shock waves in fluids, suggesting that compression waves may be capable of damaging bacteria inside beverage containers without appreciably increasingly the temperature or altering the freshness and flavor of the beverage contents. Although a combined process such as thermosonication (e.g., sonication with heating) is likely more efficient, it is instructive to compute the acoustic pressure field distribution inside the beverage container. The COMSOL simulations used two and three-dimensional models of beverage containers placed in a water bath to compute the acoustic pressure field. A limitation of these COMSOL models is that they cannot determine the bacterial lysis efficiency, rather the models provide an indirect metric of bacterial lysis based on the magnitude of the pressure field and its distribution.
Efficient finite element methods for solving the Monge-Ampere equation.
Abstract not provided.
Machine learned surrogate models for threaded fastener geometries in finite element analysis.
Abstract not provided.
Discovery of structure-preserving finite element spaces for multiscale.
Abstract not provided.
Fluid-shell interactions using non-intrusive coupling based on the Immersed Finite Element Method.
Abstract not provided.
Modeling Induced Polarization of Thin Features Using Hierarchical Finite Elements .
Abstract not provided.
Non-intrusive coupling of multi-physics codes for Eulerian-Lagrangian solid-solid interaction using Immersed Finite Element Method.
Abstract not provided.
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