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Hybrid Learning Models for Statistical Continuum Mechanics
Hybrid Learning Models for Statistical Continuum Mechanics
Hybrid Learning Models for Statistical Continuum Mechanics

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105604
ISBN  
9798265402875
DDC  
515.35
저자명  
Kelly, Conlain.
서명/저자  
Hybrid Learning Models for Statistical Continuum Mechanics
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
139 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Kalidindi, Surya.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약This document summarizes my research aimed at creating interpretable and useful machine learning models to assist efforts in materials design. In particular, I focus on the problem of predicting local response fields (stresses and strains) over heterogeneous structures subjected to boundary loading conditions, also known as the localization problem. In a sense all of micromechanics consists of elasticity plus defect motion; my doctoral work extensively explores the first half of that equation in relation to machine learning. This thesis comprises three papers: an exploratory study applying iterative neural networks to elastic localization, a thermodynamically-informed iterative neural operator which generalizes these ideas to work over a wider range of microstructure classes and loading directions, and an extrapolation study which explores how far neural operators can be taken outside their training distribution by hybridizing them with FFT-based relaxation solvers. All three papers focus on purely elastic deformations, but keep an eye on the long-term goal of modeling time-dependent, dissipative deformations. These are contextualized as part of the general stochastic inverse problem known as process-structure-property modeling.Beyond the localization problem, I have been fortunate to collaborate on a number of works which build up different parts of the process-structure-property linkage. Most of these efforts have been published in the theses of Dr. Andreas Robertson and Dr. Adam Generale, so I only provide brief descriptions and summaries for each paper. In particular, I contextualize these works as part of the increasing alignment between the fields of deep learning, numerical methods, and continuum mechanics. The contributions of this thesis are thus twofold: to provide useful deep learning models which allow exploration of the microstructure space, and to advance a shared language bridging the conceptually-isolated fields of data-driven modeling and statistical continuum mechanics.
일반주제명  
Partial differential equations
일반주제명  
Deep learning
일반주제명  
Homogenization
일반주제명  
Microstructure
일반주제명  
Deformation
일반주제명  
Mechanics
일반주제명  
Bridges
일반주제명  
Boundary conditions
일반주제명  
Materials fatigue
일반주제명  
Composite materials
일반주제명  
Materials science
일반주제명  
Mathematics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aKelly,  Conlain.
■24510▼aHybrid  Learning  Models  for  Statistical  Continuum  Mechanics
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a139  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Kalidindi,  Surya.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aThis  document  summarizes  my  research  aimed  at  creating  interpretable  and  useful  machine  learning  models  to  assist  efforts  in  materials  design.  In  particular,  I  focus  on  the  problem  of  predicting  local  response  fields  (stresses  and  strains)  over  heterogeneous  structures  subjected  to  boundary  loading  conditions,  also  known  as  the  localization  problem.  In  a  sense  all  of  micromechanics  consists  of  elasticity  plus  defect  motion;  my  doctoral  work  extensively  explores  the  first  half  of  that  equation  in  relation  to  machine  learning.  This  thesis  comprises  three  papers:  an  exploratory  study  applying  iterative  neural  networks  to  elastic  localization,  a  thermodynamically-informed  iterative  neural  operator  which  generalizes  these  ideas  to  work  over  a  wider  range  of  microstructure  classes  and  loading  directions,  and  an  extrapolation  study  which  explores  how  far  neural  operators  can  be  taken  outside  their  training  distribution  by  hybridizing  them  with  FFT-based  relaxation  solvers.  All  three  papers  focus  on  purely  elastic  deformations,  but  keep  an  eye  on  the  long-term  goal  of  modeling  time-dependent,  dissipative  deformations.  These  are  contextualized  as  part  of  the  general  stochastic  inverse  problem  known  as  process-structure-property  modeling.Beyond  the  localization  problem,  I  have  been  fortunate  to  collaborate  on  a  number  of  works  which  build  up  different  parts  of  the  process-structure-property  linkage.  Most  of  these  efforts  have  been  published  in  the  theses  of  Dr.  Andreas  Robertson  and  Dr.  Adam  Generale,  so  I  only  provide  brief  descriptions  and  summaries  for  each  paper.  In  particular,  I  contextualize  these  works  as  part  of  the  increasing  alignment  between  the  fields  of  deep  learning,  numerical  methods,  and  continuum  mechanics.  The  contributions  of  this  thesis  are  thus  twofold:  to  provide  useful  deep  learning  models  which  allow  exploration  of  the  microstructure  space,  and  to  advance  a  shared  language  bridging  the  conceptually-isolated  fields  of  data-driven  modeling  and  statistical  continuum  mechanics.
■590    ▼aSchool  code:  0078.
■650  4▼aPartial  differential  equations
■650  4▼aDeep  learning
■650  4▼aHomogenization
■650  4▼aMicrostructure
■650  4▼aDeformation
■650  4▼aMechanics
■650  4▼aBridges
■650  4▼aBoundary  conditions
■650  4▼aMaterials  fatigue
■650  4▼aComposite  materials
■650  4▼aMaterials  science
■650  4▼aMathematics
■690    ▼a0346
■690    ▼a0800
■690    ▼a0794
■690    ▼a0405
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360673▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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