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Enhancing Multidisciplinary Design Optimization Through Automated Computational Model Construction and Sensitivity Analysis- [electronic resource]
Enhancing Multidisciplinary Design Optimization Through Automated Computational Model Cons...
Enhancing Multidisciplinary Design Optimization Through Automated Computational Model Construction and Sensitivity Analysis- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214101522
ISBN  
9798380362368
DDC  
629.1
저자명  
Gandarillas, Victor.
서명/저자  
Enhancing Multidisciplinary Design Optimization Through Automated Computational Model Construction and Sensitivity Analysis - [electronic resource]
발행사항  
[S.l.]: : University of California, San Diego., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(130 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
주기사항  
Advisor: Hwang, John T.
학위논문주기  
Thesis (Ph.D.)--University of California, San Diego, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약Multidisciplinary design optimization (MDO) is an approach that uses optimization methods to design complex engineering systems involving multiple disciplines simultaneously. The coupled nature of multidisciplinary systems and the large number of design variables involved in complex systems present unique challenges to solving MDO problems. One of these challenges is the implementation of software necessary to evaluate multidisciplinary models within an optimization framework. When gradient-based optimization approaches are used, efficient and accurate derivatives must be computed for each model evaluation. This dissertation presents an approach that significantly reduces the manual effort required to implement computational models for use within a gradient-based MDO framework, especially in large-scale problems. This dissertation introduces a novel approach to address these challenges and automate the process, enabling accurate and efficient adjoint-based sensitivity analysis for gradient-based MDO in particular. To address these challenges, a three-stage compiler methodology is proposed. The methodology centers around a graph representation that provides a foundation for automating sensitivity analysis in MDO. In addition, the Computational System Design Language (CSDL) is introduced, which allows for a concise description of the physical system. The adoption of CSDL demonstrates a twofold reduction in code complexity for engineering models, significantly reducing the barrier to entry for MDO practitioners. The three-stage compiler also provides users of CSDL with the ability to measure the effect of the model structure on run-time performance and memory complexity using the graph representation. Finally, the methodology developed in this dissertation is applied to the design of a space-based virtual telescope comprised of two spacecraft flying in formation. A reformulation of the orbit dynamics of the spacecraft is found to avoid the introduction of truncation errors due to tight formation constraints that render solving the optimization problem impossible. A sequential approach to applying MDO to the design of a space-based virtual telescope is also found to be more robust than solving the MDO problem where all disciplines are considered simultaneously.
일반주제명  
Aerospace engineering.
일반주제명  
Mechanical engineering.
키워드  
Multidisciplinary design optimization
키워드  
Optimization methods
키워드  
Multidisciplinary systems
키워드  
Computational models
기타저자  
University of California, San Diego Mechanical and Aerospace Engineering
기본자료저록  
Dissertations Abstracts International. 85-03B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■020    ▼a9798380362368
■035    ▼a(MiAaPQ)AAI30570208
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a629.1
■1001  ▼aGandarillas,  Victor.
■24510▼aEnhancing  Multidisciplinary  Design  Optimization  Through  Automated  Computational  Model  Construction  and  Sensitivity  Analysis▼h[electronic  resource]
■260    ▼a[S.l.]:▼bUniversity  of  California,  San  Diego.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(130  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-03,  Section:  B.
■500    ▼aAdvisor:  Hwang,  John  T.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  San  Diego,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aMultidisciplinary  design  optimization  (MDO)  is  an  approach  that  uses  optimization  methods  to  design  complex  engineering  systems  involving  multiple  disciplines  simultaneously.  The  coupled  nature  of  multidisciplinary  systems  and  the  large  number  of  design  variables  involved  in  complex  systems  present  unique  challenges  to  solving  MDO  problems.  One  of  these  challenges  is  the  implementation  of  software  necessary  to  evaluate  multidisciplinary  models  within  an  optimization  framework.  When  gradient-based  optimization  approaches  are  used,  efficient  and  accurate  derivatives  must  be  computed  for  each  model  evaluation.  This  dissertation  presents  an  approach  that  significantly  reduces  the  manual  effort  required  to  implement  computational  models  for  use  within  a  gradient-based  MDO  framework,  especially  in  large-scale  problems.  This  dissertation  introduces  a  novel  approach  to  address  these  challenges  and  automate  the  process,  enabling  accurate  and  efficient  adjoint-based  sensitivity  analysis  for  gradient-based  MDO  in  particular.  To  address  these  challenges,  a  three-stage  compiler  methodology  is  proposed.  The  methodology  centers  around  a  graph  representation  that  provides  a  foundation  for  automating  sensitivity  analysis  in  MDO.  In  addition,  the  Computational  System  Design  Language  (CSDL)  is  introduced,  which  allows  for  a  concise  description  of  the  physical  system.  The  adoption  of  CSDL  demonstrates  a  twofold  reduction  in  code  complexity  for  engineering  models,  significantly  reducing  the  barrier  to  entry  for  MDO  practitioners.  The  three-stage  compiler  also  provides  users  of  CSDL  with  the  ability  to  measure  the  effect  of  the  model  structure  on  run-time  performance  and  memory  complexity  using  the  graph  representation.  Finally,  the  methodology  developed  in  this  dissertation  is  applied  to  the  design  of  a  space-based  virtual  telescope  comprised  of  two  spacecraft  flying  in  formation.  A  reformulation  of  the  orbit  dynamics  of  the  spacecraft  is  found  to  avoid  the  introduction  of  truncation  errors  due  to  tight  formation  constraints  that  render  solving  the  optimization  problem  impossible.  A  sequential  approach  to  applying  MDO  to  the  design  of  a  space-based  virtual  telescope  is  also  found  to  be  more  robust  than  solving  the  MDO  problem  where  all  disciplines  are  considered  simultaneously.
■590    ▼aSchool  code:  0033.
■650  4▼aAerospace  engineering.
■650  4▼aMechanical  engineering.
■653    ▼aMultidisciplinary  design  optimization
■653    ▼aOptimization  methods
■653    ▼aMultidisciplinary  systems
■653    ▼aComputational  models
■690    ▼a0538
■690    ▼a0548
■71020▼aUniversity  of  California,  San  Diego▼bMechanical  and  Aerospace  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g85-03B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0033
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16934047▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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