Publications

Isogeometric Convolution Hierarchical Deep-learning Neural Network: Isogeometric analysis with versatile adaptivity

L Zhang, C Park, Y Lu, H Li, S Mojumder, S Saha, J Guo, Y Li, T Abbott, …

Computer Methods in Applied Mechanics and Engineering, 116356

Calibration of Cellular Automaton Model for Microstructure Prediction in Additive Manufacturing Using Dissimilarity Score

UF Ghumman, L Fang, GJ Wagner, W Chen

Journal of Manufacturing Science and Engineering 145 (6), 061002

Convolution hierarchical deep-learning neural network (c-hidenn) with graphics processing unit (gpu) acceleration

C Park, Y Lu, S Saha, T Xue, J Guo, S Mojumder, DW Apley, GJ Wagner, …

Computational Mechanics, 1-27

Convolution Hierarchical Deep-learning Neural Networks (C-HiDeNN): finite elements, isogeometric analysis, tensor decomposition, and beyond

Y Lu, H Li, L Zhang, C Park, S Mojumder, S Knapik, Z Sang, S Tang, …

Computational Mechanics, 1-30

Multiphysics modeling of mixing and material transport in additive manufacturing with multicomponent powder beds

A Samaei, Z Sang, JA Glerum, JE Mogonye, GJ Wagner

Additive Manufacturing 67, 103481

Physics Guided Heat Source for Quantitative Prediction of the Laser Track Measurements of IN718 in 2022 NIST AM Benchmark Test

AA Amin, Y Li, Y Lu, X Xie, Z Gan, S Mojumder, GJ Wagner, WK Liu

UMBC Faculty Collection

Impact of assuming a circular orifice on flow error through elliptical regurgitant orifices: computational fluid dynamics and in vitro analysis of proximal flow convergence

J Lee, SS Mitter, L Van Assche, H Huh, GJ Wagner, E Wu, AJ Barker, …

The International Journal of Cardiovascular Imaging 39 (2), 307-318

Data-driven analysis of process, structure, and properties of additively manufactured Inconel 718 thin walls

L Fang, L Cheng, JA Glerum, J Bennett, J Cao, GJ Wagner

npj Computational Materials 8 (1), 126

Multi-time stepping integration method with dirichlet-robin interface coupling and applications of same

GJ Wagner, L Cheng, M Sarfi

US Patent App. 17/536,244

A representative volume element network (RVE-net) for accelerating RVE analysis, microscale material identification, and defect characterization

L Cheng, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 390, 114507

A physics-informed machine learning method for predicting grain structure characteristics in directed energy deposition

D Kats, Z Wang, Z Gan, WK Liu, GJ Wagner, Y Lian

Computational Materials Science 202, 110958

 

Turbulence Drives Hyporheic Exchange and Fine Particle Deposition across the Entire Riverbed Surface.

ES Cifuentes, J Dallmann, C Phillips, Y Teitelbaum, S Arnon, N Sund, …

AGU Fall Meeting 2021, held in New Orleans, LA, 13-17 December 2021

 

Turbulence Drives Hyporheic Exchange and Fine Particle Deposition across the Entire Riverbed Surface.

E Saavedra Cifuentes, J Dallmann, C Phillips, Y Teitelbaum, S Arnon, …

AGU Fall Meeting Abstracts 2021, H35A-08

Double averaging analysis applied to a large eddy simulation of coupled turbulent overlying and porewater flow

YP Lian, J Dallmann, B Sonin, KR Roche, AI Packman, WK Liu, …

Water Resources Research 57 (11), e2021WR029918

Data driven analysis of thermal simulations, microstructure and mechanical properties of Inconel 718 thin walls deposited by metal additive manufacturing

L Fang, L Cheng, JA Glerum, J Bennett, J Cao, GJ Wagner

arXiv preprint arXiv:2110.07108

An optimally-coupled multi-time stepping method for transient heat conduction simulation for additive manufacturing

L Cheng, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 381, 113825

Mesoscopic and multiscale modelling in materials

J Fish, GJ Wagner, S Keten

Nature materials 20 (6), 774-786

A conservative level set method on unstructured meshes for modeling multiphase thermo-fluid flow in additive manufacturing processes

S Lin, Z Gan, J Yan, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 372, 113348

Data-driven characterization of thermal models for powder-bed-fusion additive manufacturing

W Yan, Y Lu, K Jones, Z Yang, J Fox, P Witherell, G Wagner, WK Liu

Additive manufacturing 36, 101503

Data-driven characterization of computational models for powder-bed-fusion additive manufacturing

Y Lu, Z Yang, PW Witherell, W Yan, K Jones, G Wagner, WK Liu, JC Fox

Yan Lu, Zhuo Yang, Paul W. Witherell, Wentao Yan, Kevontrez Jones, Gregory …

Microstructure Comparison Using Dissimilarity Metric for Additive Manufacturing of Metals

U Farooq Ghumman, S Saha, L Fang, WK Liu, G Wagner, W Chen

International Symposium on Flexible Automation 83617, V001T07A008

Acceleration strategies for explicit finite element analysis of metal powder-based additive manufacturing processes using graphical processing units

M Mozaffar, E Ndip-Agbor, S Lin, GJ Wagner, K Ehmann, J Cao

Computational Mechanics 64, 879-894

Data-driven microstructure and microhardness design in additive manufacturing using a self-organizing map

Z Gan, H Li, SJ Wolff, JL Bennett, G Hyatt, GJ Wagner, J Cao, WK Liu

Engineering 5 (4), 730-735

Benchmark study of thermal behavior, surface topography, and dendritic microstructure in selective laser melting of Inconel 625

Z Gan, Y Lian, SE Lin, KK Jones, WK Liu, GJ Wagner

Integrating Materials and Manufacturing Innovation 8, 178-193

A cellular automaton finite volume method for microstructure evolution during additive manufacturing

Y Lian, Z Gan, C Yu, D Kats, WK Liu, GJ Wagner

Materials & Design 169, 107672

Effects of turbulent hyporheic mixing on reach‐scale transport

KR Roche, A Li, D Bolster, GJ Wagner, AI Packman

Water Resources Research 55 (5), 3780-3795

Experimentally validated predictions of thermal history and microhardness in laser-deposited Inconel 718 on carbon steel

SJ Wolff, Z Gan, S Lin, JL Bennett, W Yan, G Hyatt, KF Ehmann, …

Additive Manufacturing 27, 540-551

A volume-conserving balanced-force level set method on unstructured meshes using a control volume finite element formulation

S Lin, J Yan, D Kats, GJ Wagner

Journal of Computational Physics 380, 119-142

Large eddy simulation of turbulent flow over and through a rough permeable bed

YP Lian, J Dallmann, B Sonin, KR Roche, WK Liu, AI Packman, …

Computers & Fluids 180, 128-138

Isogeometric analysis of multi-phase flows with surface tension and with application to dynamics of rising bubbles

J Yan, S Lin, Y Bazilevs, GJ Wagner

Computers & Fluids 179, 777-789

Modeling process-structure-property relationships for additive manufacturing

W Yan, S Lin, OL Kafka, C Yu, Z Liu, Y Lian, S Wolff, J Cao, GJ Wagner, …

Frontiers of Mechanical Engineering 13, 482-492

Coupling a Continuum Granular Segregation Model with a Flow Model Incorporating Granular Rheology

R Lueptow, H Xiao, J Yan, GJ Wagner, JM Ottino, PB Umbanhowar

2018 AIChE Annual Meeting

An integrated process–structure–property modeling framework for additive manufacturing

W Yan, Y Lian, C Yu, OL Kafka, Z Liu, WK Liu, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 339, 184-204

Data-driven mechanistic modeling of influence of microstructure on high-cycle fatigue life of nickel titanium

OL Kafka, C Yu, M Shakoor, Z Liu, GJ Wagner, WK Liu

JOM 70, 1154-1158

A fully coupled finite element formulation for liquid–solid–gas thermo-fluid flow with melting and solidification

J Yan, W Yan, S Lin, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 336, 444-470

A parallelized three-dimensional cellular automaton model for grain growth during additive manufacturing

Y Lian, S Lin, W Yan, WK Liu, GJ Wagner

Computational Mechanics 61, 543-558

Data-driven multi-scale multi-physics models to derive process–structure–property relationships for additive manufacturing

W Yan, S Lin, OL Kafka, Y Lian, C Yu, Z Liu, J Yan, S Wolff, H Wu, …

Computational Mechanics 61, 521-541

Meso-scale modeling of multiple-layer fabrication process in selective electron beam melting: inter-layer/track voids formation

W Yan, Y Qian, W Ge, S Lin, WK Liu, F Lin, GJ Wagner

Materials & Design 141, 210-219

Multi-physics modeling of single/multiple-track defect mechanisms in electron beam selective melting

W Yan, W Ge, Y Qian, S Lin, B Zhou, WK Liu, F Lin, GJ Wagner

Acta Materialia 134, 324-333

An enriched finite element method to fractional advection–diffusion equation

S Luan, Y Lian, Y Ying, S Tang, GJ Wagner, WK Liu

Computational Mechanics 60, 181-201

A framework to link localized cooling and properties of directed energy deposition (DED)-processed Ti-6Al-4V

SJ Wolff, S Lin, EJ Faierson, WK Liu, GJ Wagner, J Cao

Acta Materialia 132, 106-117

An energetically consistent concurrent multiscale method for heterogeneous heat transfer and phase transition applications

S Lin, J Smith, WK Liu, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 315, 100-120

A meshfree method for the fractional advection-diffusion equation

Y Lian, GJ Wagner, WK Liu

Meshfree methods for partial differential equations VIII, 53-66

Differential operator multiplication method for fractional differential equations

S Tang, Y Ying, Y Lian, S Lin, Y Yang, GJ Wagner, WK Liu

Computational Mechanics 58, 879-888

A Petrov–Galerkin finite element method for the fractional advection–diffusion equation

Y Lian, Y Ying, S Tang, S Lin, GJ Wagner, WK Liu

Computer Methods in Applied Mechanics and Engineering 309, 388-410

Moderated Poster: Computational Fluid Dynamics Characterization of Flow Through Dual Orifice Mitral Regurgitant Jets: P1-96

S Mitter, S Manifold, N Furiasse, J Puthumana, M Ricciardi, G Wagner, …

Journal of the American Society of Echocardiography 29 (6)

Re: Blood flow analysis of the aortic arch using computational fluid dynamics

M Markl, GJ Wagner, AJ Barker

European Journal of Cardio-Thoracic Surgery 49 (6), 1586-1587

Linking process, structure, property, and performance for metal-based additive manufacturing: computational approaches with experimental support

J Smith, W Xiong, W Yan, S Lin, P Cheng, OL Kafka, GJ Wagner, J Cao, …

Computational Mechanics 57, 583-610

Impact of assuming a circular orifice on flow error through elliptical regurgitant orifices: a computational fluid dynamics (CFD) analysis

SS Mitter, GJ Wagner, AJ Barker, M Markl, JD Thomas

Circulation 132 (suppl_3), A16560-A16560

Calibration and forward uncertainty propagation for large-eddy simulations of engineering flows

JA Templeton, ML Blaylock, SP Domino, JC Hewson, PR Kumar, J Ling, …

Sandia National Lab.(SNL-CA), Livermore, CA (United States); Sandia National …

Towards high-quality selective beam melting technologies: modeling and experiments of single track formations

W Yan, W Ge, J Smith, G Wagner, F Lin, W Kam Liu

2015 International Solid Freeform Fabrication Symposium

Computational Approaches to Large-Scale Multi-Physics Simulations: Methods and Tools for National Laboratory Applications.

GJ Wagner

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Predictions of transport accident fires using coupled structural dynamics and computational fluid dynamics

AL Brown, KE Metzinger, GJ Wagner

Fire Safety Science 11, 584-597

Thermal Fluid Science & Engineering at Sandia/CA.

GJ Wagner

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Methods and Findings from Combined Environment Transportation Impact and Fire Predictions Employing Coupled Structural Dynamics and Computational Fluid Dynamics.

A Brown, KE Metzinger, GJ Wagner

Sandia National Lab.(SNL-NM), Albuquerque, NM (United States); Sandia …

Atomistic‐to‐Continuum Coupling Methods for Heat Transfer in Solids

GJ Wagner

Multiscale Simulations and Mechanics of Biological Materials, 3-20

March 2013 ASC Newsletter.

SM Kelly, HE Fang, GJ Wagner, JA Templeton

Sandia National Lab.(SNL-NM), Albuquerque, NM (United States); Sandia …

Phase field modeling of solid electrolyte interface formation in lithium ion batteries

J Deng, GJ Wagner, RP Muller

Journal of the Electrochemical Society 160 (3), A487

Multiscale Modelling of Nuclear Waste Reprocessing.

RR Rao, CM Brotherton, BB Cipiti, RP Pawlowski, DR Noble, …

Sandia National Lab.(SNL-NM), Albuquerque, NM (United States); Sandia …

Multiscale models of nuclear waste reprocessing: from the mesoscale to the plant-scale.

RR Rao, CM Brotherton, SP Domino, LC Erickson, AM Grillet, LG Hughes, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Modeling thermal abuse in transportation batteries.

RP Muller, RT Cygan, J Deng, AL Frischknecht, JC Hewson, MP Kanouff, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Impact, fire, and fluid spread code coupling for complex transportation accident environment simulation

AL Brown, GJ Wagner, KE Metzinger

Modified embedded atom method potential for Al, Si, Mg, Cu, and Fe alloys

B Jelinek, S Groh, MF Horstemeyer, J Houze, SG Kim, GJ Wagner, …

Physical Review B 85 (24), 245102

Battery Abuse Modeling.

RP Muller, AL Frischknecht, PA Schultz, GJ Wagner, J Deng, HK Moffat

Sandia National Lab.(SNL-NM), Albuquerque, NM (United States); Sandia …

A phase field model of solid electrolyte interface formation in lithium-ion batteries

J Deng, GJ Wagner, RP Muller

MRS Online Proceedings Library (OPL) 1440, mrss12-1440-o01-09

Accelerated molecular dynamics and equation-free methods for simulating diffusion in solids.

J Deng, JA Zimmerman, AP Thompson, WM Brown, SJ Plimpton, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Thermal Stability of Nanopores in Pd Alloys.

D Robinson, JD Sugar, GJ Wagner, BW Jacobs, I Arslan, L Parent, …

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

MEAM potentials for Al, Si, Mg, Cu, and Fe alloys

B Jelinek, S Groh, MF Horstemeyer, J Houze, SG Kim, GJ Wagner, …

arXiv preprint arXiv:1107.0544

A Multiple-TImescale Simulation Method for the Morphological Evolution of Metal Interfaces.

GJ Wagner, J Deng, JA Zimmerman

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Three-dimensional pore evolution of nanoporous metal particles for energy storage

MP Klein, BW Jacobs, MD Ong, SJ Fares, DB Robinson, V Stavila, …

Journal of the American Chemical Society 133 (24), 9144-9147

Atomistic-to-Continuum Modeling for Multi-scale and Multi-physics Computations.

JA Templeton, RE Jones, GJ Wagner, JA Zimmerman

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Long Timescale Atomistic Simulation Methods for Solid Materials.

GJ Wagner, J Deng, SJ Plimpton, AP Thompson, JA Zimmerman

Sandia National Lab.(SNL-CA), Livermore, CA (United States); Sandia National …

Atoms-to-Continuum (AtC) user package for LAMMPS.

JA Zimmerman, RE Jones, JA Templeton, GJ Wagner

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Accelerated molecular dynamics and equation-free methods for simulating diffusion in solids

GJ Wagner, J Deng, LC Erickson, SJ Plimpton, AP Thompson, X Zhou, …

Technical Report SAND2011-6659, Sandia National Laboratories, Department of …

Application of a field-based method to spatially varying thermal transport problems in molecular dynamics

JA Templeton, RE Jones, GJ Wagner

Modelling and Simulation in Materials Science and Engineering 18 (8), 085007

Coupled ionic and electronic heat transport at the nanoscale.

DL Olmsted, NA Modine, MJ Beck, RE Jones, RM Hatcher, JA Templeton, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Modeling thermal abuse of Li ion transportation batteries.

GJ Wagner, HK Moffat, RS Larson, MP Kanouff, EP Roth, JC Hewson, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

3-D Pore Evolution of Nanoporous Metal Particles for Energy Storage.

D Robinson, B Jacobs, GJ Wagner, MP Klein, MD Ong, SJ Fares, I Arslan

Nano Letters

A review of methods and findings from combined environment transportation fire predictions employing coupled structural dynamics and computational fluid dynamics.

KE Metzinger, AL Brown, GJ Wagner

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Electron transport enhanced molecular dynamics for metals and semi‐metals

RE Jones, JA Templeton, GJ Wagner, D Olmsted, NA Modine

International Journal for Numerical Methods in Engineering 83 (8‐9), 940-967

Modeling Thermal Abuse in Transportation Batteries

R Muller, P Schultz, R Cygan, A Frischnecht, G Wagner, R Larson, …

ECS Meeting Abstracts, 332

Kinetic Monte Carlo simulation of the aging of nanoporous metals.

MD Ong, D Seif, GJ Wagner

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Coupled Ionic and Electronic Heat Transport at the Nanoscale

NA Modine, RE Jones, JA Templeton, GJ Wagner, DL Olmsted, …

APS March Meeting Abstracts 2010, H14. 003

Atoms-to-Continuum?(AtC) user? package? for? LAMMPS?.

RE Jones, JA Templeton, GJ Wagner, JA Zimmerman

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

2010 MRS Spring Meeting Том. 1263. Computational Approaches to Materials for Energy.-Сер. Computational Approaches to Materials for Energy

RA Cantrell, P Clancy, N Govind, A Andersen, K Kowalski, R Rousseau, …

QUANTUM 13 (18), 0

Kinetic Monte Carlo Simulation of the Aging of Nanoporous Metals

GJ Wagner, D Seif, MD Ong

MRS Online Proceedings Library (OPL) 1263, 1263-Y04-04

Fluid spread model validation for emerging liquid tank impact predictive methods

AL Brown, GJ Wagner

International Heat Transfer Conference 49361, 925-934

Equation-free accelerated simulations of the morphological relaxation of crystal surfaces

GJ Wagner, X Zhou, SJ Plimpton

International Journal for Multiscale Computational Engineering 8 (4)

Crossing the mesoscale no-man’s land via parallel kinetic Monte Carlo

S Plimpton, C Battaile, M Chandross, L Holm, A Thompson, V Tikare, …

Sandia Report SAND2009-6226 1

Projective Integration for Simulating Multiple Timescale Diffusion Processes in Solids.

GJ Wagner, X Zhou, SJ Plimpton

Sandia National Lab.(SNL-CA), Livermore, CA (United States); Sandia National …

Enhancing Molecuar Dynamics to Capture Electronic Effects

NA Modine, RE Jones, DL Olmsted, JA Templeton, GJ Wagner, …

APS March Meeting Abstracts, B26. 006

An atomistic-to-continuum coupling method for heat transfer in solids

GJ Wagner, RE Jones, JA Templeton, ML Parks

Computer Methods in Applied Mechanics and Engineering 197 (41-42), 3351-3365

Hydrogen effects on nanovoid nucleation at nickel grain boundaries

MQ Chandler, MF Horstemeyer, MI Baskes, GJ Wagner, PM Gullett, …

Acta materialia 56 (3), 619-631

Hydrogen effects on nanovoid nucleation in face-centered cubic single-crystals

MQ Chandler, MF Horstemeyer, MI Baskes, PM Gullett, GJ Wagner, …

Acta materialia 56 (1), 95-104

A mathematical framework for multiscale science and engineering: the variational multiscale method and interscale transfer operators.

GJ Wagner, SS Collis, JA Templeton, RB Lehoucq, ML Parks, RE Jones, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Mechanics of Carbon Nanotubes1

W Kam Liu, GJ Wagner, D Qian, RS Ruoff, MF Yu

Handbook of Nanoscience, Engineering, and Technology, Second Edition, 23-1-23-63

Sandia National Laboratories abnormal thermal fire environment simulation approach overview.

SP Domino, DJ Glaze, GJ Wagner

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

An Atomistic-to-Continuum Coupling Method for Non-Equilibrium Heat Transfer in Solids.

RE Jones, JA Templeton, ML Parks, RB Lehoucq, DL Olmsted, …

Sandia National Lab.(SNL-CA), Livermore, CA (United States)

Atomistic simulations of shock induced microstructural evolution and spallation in single crystal nickel

SG Srinivasan, MI Baskes, GJ Wagner

Journal of applied physics 101 (4)

Continuum-atomistic modeling of shock dynamics using a bridging scale decomposition scheme: proof of principle in one dimension.

DW Brenner, B Broom, Y Shi, Y Hu, GJ Wagner

Proposed for publication in Molecular Simulation.

Verification for multi-mechanics applications

S Domino, G Wagner, A Luketa-Hanlin, A Black, J Sutherland

48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials …

A surface Cauchy–Born model for nanoscale materials

HS Park, PA Klein, GJ Wagner

International Journal for Numerical Methods in Engineering 68 (10), 1072-1095

Spallation of single crystal nickel by void nucleation at shock induced grain junctions

SG Srinivasan, MI Baskes, GJ Wagner

Journal of materials science 41, 7838-7842

Coupled Multiphysics Simulations of Large-Scale Fires in SIERRA.

SP Domino, GJ Wagner

Sandia National Lab.(SNL-NM), Albuquerque, NM (United States); Sandia …

Atomisitic-to-continuum coupling for heat transfer in solids.

RB Lehoucq, A Slepoy, RE Jones, GJ Wagner, ML Parks

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Bridging scale methods for nanomechanics and materials

WK Liu, HS Park, D Qian, EG Karpov, H Kadowaki, GJ Wagner

Computer Methods in Applied Mechanics and Engineering 195 (13-16), 1407-1421

A molecular dynamics study of void growth and coalescence in single crystal nickel

GP Potirniche, MF Horstemeyer, GJ Wagner, PM Gullett

International Journal of Plasticity 22 (2), 257-278

Embedded atom method simulations of single crystal nickel ductile fracture

GP Potirniche, MF Horstemeyer, GJ Wagner, PM Gullett

11th International Conference on Fracture 2005, ICF11, 3860-3865

Approximate projection methods and time integration stability

CD Moena, SP Dominob, GJ Wagnera

Third MIT Conference on Computational Fluid and Solid Mechanics, 769-771

Fatigue damage in nickel and copper single crystals at nanoscale

GP Potirniche, MF Horstemeyer, B Jelinek, GJ Wagner

International Journal of Fatigue 27 (10-12), 1179-1185

A Green’s function approach to deriving non‐reflecting boundary conditions in molecular dynamics simulations

EG Karpov, GJ Wagner, WK Liu

International Journal for Numerical Methods in Engineering 62 (9), 1250-1262

Verification of coupled heat transfer capabilities in fuego.

SP Domino, CD Moen, GJ Wagner

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

Approximate projection methods and time integration stability.

SP Domino, CD Moen, GJ Wagner

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

A robust, coupled approach for atomistic-continuum simulation.

S Aubry, GJ Wagner, PA Klein, RE Jones, JA Zimmerman, DJ Bammann, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

A mathematical framework for multiscale science and engineering: the variational multiscale method and interscale transfer operators

P Bochev, M Christon, SS Collis, R Lehoucq, J Shadid, A Slepoy, …

SAND report 2871

Molecular dynamics boundary conditions for regular crystal lattices

GJ Wagner, EG Karpov, WK Liu

Computer Methods in Applied Mechanics and Engineering 193 (17-20), 1579-1601

A multiscale projection method for the analysis of carbon nanotubes

D Qian, GJ Wagner, WK Liu

Computer Methods in Applied Mechanics and Engineering 193 (17-20), 1603-1632

Mechanical resonance of quartz microfibers and boundary condition effects

X Chen, S Zhang, GJ Wagner, W Ding, RS Ruoff

Journal of applied physics 95 (9), 4823-4828

Bridging Scale Mechanics and Materials: 1970’s and Beyond

WK Liu, HS Park, EG Karpov, H Kadowaki, GJ Wagner, D Qian, S Li

Finite Element Methods: 1970’s and Beyond, 72-88

Numerical tools for atomistic simulations.

H Fang, PM Gullett, A Slepoy, MF Horstemeyer, MI Baskes, GJ Wagner, …

Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA …

High order parametric resonance and nonlinear mechanics of nanowires: Techniques and experiments

MF Yu, GJ Wagner

2003 Nanotechnology Conference and Trade Show-Nanotech 2003, 325-328

Stress generation mechanisms in carbon thin films grown by ion-beam deposition

S Zhang, HT Johnson, GJ Wagner, WK Liu, KJ Hsia

Acta Materialia 51 (17), 5211-5222

Coupling of atomistic and continuum simulations using a bridging scale decomposition

GJ Wagner, WK Liu

Journal of Computational Physics 190 (1), 249-274

Modelling and simulation of fluid structure interaction by meshfree and FEM

LT Zhang, GJ Wagner, WK Liu

Communications in Numerical Methods in Engineering 19 (8), 615-621

Particulate flow simulations using lubrication theory solution enrichment

GJ Wagner, S Ghosal, WK Liu

International Journal for Numerical Methods in Engineering 56 (9), 1261-1289

Mechanics and mechanical application of carbon nanotubes

D Qian, GJ Wagner, WK Liu, MF Yu, RS Ruoff

Encyclopedia of nanoscience and nanotechnology

Resonance vibration of amorphous  nanowires driven by mechanical or electrical field excitation

DA Dikin, X Chen, W Ding, G Wagner, RS Ruoff

Journal of applied physics 93 (1), 226-230

Mechanics of carbon nanotubes

D Qian, GJ Wagner, and, WK Liu, MF Yu, RS Ruoff

Appl. Mech. Rev. 55 (6), 495-533

Mechanics of carbon nanotubes

D Qian, MF Yu, RS Ruoff, GJ Wagner, WK Liu

Applied mechanics reviews 55 (6), 495-533

Realization of parametric resonances in a nanowire mechanical system with nanomanipulation inside a scanning electron microscope

MF Yu, GJ Wagner, RS Ruoff, MJ Dyer

Physical Review B 66 (7), 073406

Mechanics of Nanowires

RS Ruoff, X Chen, D Dikin, W Ding, MF Yu, GJ Wagner

Microscopy and Microanalysis 8 (S02), 304-305

Mechanical properties of nano-cantilevered wires driven in resonance by electrical field

D Dikin, X Chen, W Ding, G Wagner, R Ruoff

APS March Meeting Abstracts, M25. 005

Nanowire nonlinear mechanical system: techniques and experiment

MF Yu, G Wagner, M Dyer

APS March Meeting Abstracts, M25. 006

A parallelized meshfree method with boundary enrichment for large-scale CFD

LT Zhang, GJ Wagner, WK Liu

Journal of Computational Physics 176 (2), 483-506

Convergence analysis of a hierarchical enrichment of Dirichlet boundary conditions in a mesh‐free method

W Han, GJ Wagner, WK Liu

International Journal for Numerical Methods in Engineering 53 (6), 1323-1336

Surface physics, low-dimensional systems, and related topics-Realization of parametric resonances in a nanowire mechanical system with nanomanipulation inside a scanning electron

MF Yu, GJ Wagner, RS Ruoff, MJ Dyer

Physical Review-Section B-Condensed Matter 66 (7), 73406-73406

The extended finite element method for rigid particles in Stokes flow

GJ Wagner, N Moës, WK Liu, T Belytschko

International Journal for Numerical Methods in Engineering 51 (3), 293-313

Hierarchical enrichment for bridging scales and mesh‐free boundary conditions

GJ Wagner, WK Liu

International Journal for Numerical Methods in Engineering 50 (3), 507-524

An enrichment method for the simulation of suspension flows at the microscale.

GJ Wagner, S Ghosal, WK Liu

USACM: Sixth US National Congress on Computational Mechanics Abstracts, 179

A numerical investigation of particulate channel flow

GJ Wagner

Northwestern University

Application of essential boundary conditions in mesh‐free methods: a corrected collocation method

GJ Wagner, WK Liu

International Journal for Numerical Methods in Engineering 47 (8), 1367-1379

Turbulence simulation and multiple scale subgrid models

GJ Wagner, WK Liu

Computational Mechanics 25 (2-3), 117-136

Turbulence simulation and multiple scale subgrid models

GJ Wagner, WK Liu

Army High Performance Computing Research Center

Bridging Scale Mechanics and Materials

WK Liu, HS Park, EG Karpov, H Kadowaki, GJ Wagner, D Qian, S Li

Finite Element Methods, 72-88

Bridging scale methods for nanomechanics and materials Wing Kam Liu

WK Liu, HS Park, H Kadowaki, D Qian, EG Karpov, GJ Wagner

Building Critical Thinking about Computational Simulation in Engineering

G Wagner