본문

서브메뉴

A Force-Correcting Machine Learning Method for Nonlinear Marine Dynamics
A Force-Correcting Machine Learning Method for Nonlinear Marine Dynamics
A Force-Correcting Machine Learning Method for Nonlinear Marine Dynamics

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103642
ISBN  
9798314874240
DDC  
620
저자명  
Marlantes, Kyle E.
서명/저자  
A Force-Correcting Machine Learning Method for Nonlinear Marine Dynamics
발행사항  
[Sl] : University of Michigan, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
269 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
주기사항  
Advisor: Maki, Kevin J.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2025.
초록/해제  
요약Wave-induced motion has a significant effect on the efficiency, economy, safety, and operability of a ship, so predicting the motion of a ship in waves is a subject of considerable interest. However, the ship motion problem is fraught with difficulties: stochasticity in the wave environment, nonlinearity in the hydrodynamic forces, and a large number, or cardinality, of environmental, operational, or design conditions which need to be analyzed. The cost of high-fidelity computational or experimental methods makes a direct assessment using high-fidelity methods intractable.To keep the seakeeping problem tractable necessitates simplifying assumptions in the modeling of the hydrodynamic forces. This has led to widespread use of low-fidelity methods, such as linear potential flow, which still comprise a majority of industrial seakeeping evaluations. However, nonlinearity in the hydrodynamic forces is necessary to predict large amplitude responses, global structural loads, and important nonlinear phenomena such as capsize, parametric roll, and slamming. As a result, there exists a strong compromise between accuracy and computational cost in the present state-of-the-art.In recent years, data-driven methods have been explored in pursuit of low-cost models. However, most data-driven models require large training datasets to generalize, and therefore do not adequately address the cardinality of seakeeping evaluations. Furthermore, literature on data-driven methods suffers from a crisis of reproducibility, inconsistency in the metrics that are used to evaluate performance, and limited industrial adoption.In this dissertation, a question is posed: Can a data-driven approach reduce the computational cost associated with the hydrodynamic forces acting on a ship in waves and reduce the challenge of the cardinality of a seakeeping evaluation? To address this question, five attributes are proposed to guide development of a data-driven method, considering accuracy, inference cost, training cost, generalizability, and interpretability. Following this, a new method, which takes a data-driven approach to the decomposition of the hydrodynamic forces in a governing equation of motion, is proposed. The method is developed mathematically and numerically, and the configuration is explored using two data sources: a nonlinear differential equation and a higher-order nonlinear potential flow boundary element method. The proposed method is then applied in two case studies: predicting the roll responses of a tumblehome hull using computational fluid dynamics training data, and to predict the heave and pitch responses of a fast displacement ship in a region of the North Atlantic. The first case study demonstrates an accuracy improvement over low-fidelity industry tools and shows that the proposed method can be used as a new lumped-moment roll damping model. The second case study demonstrates a new workflow for seakeeping evaluations, where the proposed method is used as a data-leveraging tool to predict responses over a wave scatter diagram using a small initial high-fidelity dataset.It is found that the proposed method offers low inference cost and an order-of-magnitude reduction in training data compared to other published methods. The method also collapses the wave frequency-amplitude space in the seakeeping problem, thereby reducing the burden of cardinality in evaluations by at least a factor of ten.
일반주제명  
Engineering
일반주제명  
Ocean engineering
일반주제명  
Naval engineering
키워드  
Seakeeping and ship motions
키워드  
Force-correcting method
키워드  
Hybrid machine learning
키워드  
Generalizability
키워드  
Nonlinear marine dynamics
키워드  
Uncertainty quantification
기타저자  
University of Michigan Naval Architecture & Marine Engineering
기본자료저록  
Dissertations Abstracts International. 86-11B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017358090
■00520260202103642
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798314874240
■035    ▼a(MiAaPQ)AAI32092561
■035    ▼a(MiAaPQ)umichrackham006096
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a620
■1001  ▼aMarlantes,  Kyle  E.
■24512▼aA  Force-Correcting  Machine  Learning  Method  for  Nonlinear  Marine  Dynamics
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a269  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-11,  Section:  B.
■500    ▼aAdvisor:  Maki,  Kevin  J.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2025.
■520    ▼aWave-induced  motion  has  a  significant  effect  on  the  efficiency,  economy,  safety,  and  operability  of  a  ship,  so  predicting  the  motion  of  a  ship  in  waves  is  a  subject  of  considerable  interest.  However,  the  ship  motion  problem  is  fraught  with  difficulties:  stochasticity  in  the  wave  environment,  nonlinearity  in  the  hydrodynamic  forces,  and  a  large  number,  or  cardinality,  of  environmental,  operational,  or  design  conditions  which  need  to  be  analyzed.  The  cost  of  high-fidelity  computational  or  experimental  methods  makes  a  direct  assessment  using  high-fidelity  methods  intractable.To  keep  the  seakeeping  problem  tractable  necessitates  simplifying  assumptions  in  the  modeling  of  the  hydrodynamic  forces.  This  has  led  to  widespread  use  of  low-fidelity  methods,  such  as  linear  potential  flow,  which  still  comprise  a  majority  of  industrial  seakeeping  evaluations.  However,  nonlinearity  in  the  hydrodynamic  forces  is  necessary  to  predict  large  amplitude  responses,  global  structural  loads,  and  important  nonlinear  phenomena  such  as  capsize,  parametric  roll,  and  slamming.  As  a  result,  there  exists  a  strong  compromise  between  accuracy  and  computational  cost  in  the  present  state-of-the-art.In  recent  years,  data-driven  methods  have  been  explored  in  pursuit  of  low-cost  models.  However,  most  data-driven  models  require  large  training  datasets  to  generalize,  and  therefore  do  not  adequately  address  the  cardinality  of  seakeeping  evaluations.  Furthermore,  literature  on  data-driven  methods  suffers  from  a  crisis  of  reproducibility,  inconsistency  in  the  metrics  that  are  used  to  evaluate  performance,  and  limited  industrial  adoption.In  this  dissertation,  a  question  is  posed:  Can  a  data-driven  approach  reduce  the  computational  cost  associated  with  the  hydrodynamic  forces  acting  on  a  ship  in  waves  and  reduce  the  challenge  of  the  cardinality  of  a  seakeeping  evaluation?  To  address  this  question,  five  attributes  are  proposed  to  guide  development  of  a  data-driven  method,  considering  accuracy,  inference  cost,  training  cost,  generalizability,  and  interpretability.  Following  this,  a  new  method,  which  takes  a  data-driven  approach  to  the  decomposition  of  the  hydrodynamic  forces  in  a  governing  equation  of  motion,  is  proposed.  The  method  is  developed  mathematically  and  numerically,  and  the  configuration  is  explored  using  two  data  sources:  a  nonlinear  differential  equation  and  a  higher-order  nonlinear  potential  flow  boundary  element  method.  The  proposed  method  is  then  applied  in  two  case  studies:  predicting  the  roll  responses  of  a  tumblehome  hull  using  computational  fluid  dynamics  training  data,  and  to  predict  the  heave  and  pitch  responses  of  a  fast  displacement  ship  in  a  region  of  the  North  Atlantic.  The  first  case  study  demonstrates  an  accuracy  improvement  over  low-fidelity  industry  tools  and  shows  that  the  proposed  method  can  be  used  as  a  new  lumped-moment  roll  damping  model.  The  second  case  study  demonstrates  a  new  workflow  for  seakeeping  evaluations,  where  the  proposed  method  is  used  as  a  data-leveraging  tool  to  predict  responses  over  a  wave  scatter  diagram  using  a  small  initial  high-fidelity  dataset.It  is  found  that  the  proposed  method  offers  low  inference  cost  and  an  order-of-magnitude  reduction  in  training  data  compared  to  other  published  methods.  The  method  also  collapses  the  wave  frequency-amplitude  space  in  the  seakeeping  problem,  thereby  reducing  the  burden  of  cardinality  in  evaluations  by  at  least  a  factor  of  ten.
■590    ▼aSchool  code:  0127.
■650  4▼aEngineering
■650  4▼aOcean  engineering
■650  4▼aNaval  engineering
■653    ▼aSeakeeping  and  ship  motions
■653    ▼aForce-correcting  method
■653    ▼aHybrid  machine  learning
■653    ▼aGeneralizability
■653    ▼aNonlinear  marine  dynamics
■653    ▼aUncertainty  quantification
■690    ▼a0537
■690    ▼a0468
■690    ▼a0547
■690    ▼a0800
■71020▼aUniversity  of  Michigan▼bNaval  Architecture  &  Marine  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-11B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358090▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF15782 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.