On the model reduction methods with free-interface substructuring for dynamic analysis = 동적 해석을 위한 자유단 경계 기반의 부구조를 갖는 모델 축소 기법

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In response to the large and complex finite element models in practical engineering, the needs for studies on model reduction methods have been highlighted. Since 1960s, the model reduction methods have been actively studied for various problems such as computational efficiency of the reduction process, improvement of the accuracy of the reduction model. In this dissertation, the effective model reduction methods are proposed. The developed methods divide the entire finite element model into several substructures and consider the free-interface between neighboring substructures. In particular, the new component mode synthesis (CMS) method is provided by improving the accuracy of dual Craig-Bampton (DCB) method. The error estimation method for the DCB method is also proposed. For the degree of freedom based reduction method, the new dynamic condensation method with fully decoupled substructuring is proposed. Through the various numerical problems, the solution accuracy and computational efficiency of the present methods are demonstrated.
Advisors
Lee, Phill-Seungresearcher이필승researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 기계공학과, 2018.2,[vii, 144 p. :]

Keywords

Finite element method▼astructural dynamics▼amodel reduction method▼acomponent mode synthesis▼aCraig-Bampton (CB) method▼adual Craig-Bampton (DCB) method▼aGuyan method▼aimproved reduced▼asystem equivalent reduction expansion process (SEREP) method▼aeigenvalue problem; 유한요소법▼a구조동역학▼a모델축소기법▼a부분구조합성법▼aCraig-Bampton 기법▼aDual Craig-Bampton 기법▼aGuyan 기법▼aIRS 기법▼aSEREP 기법▼a고유치 해석

URI
http://hdl.handle.net/10203/264552
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734241&flag=dissertation
Appears in Collection
ME-Theses_Ph.D.(박사논문)
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