서지주요정보
바람-구조물 상호 작용에 관한 적응적 유한요소 해석 = Adaptive finite element analysis of wind-structure interactions
서명 / 저자 바람-구조물 상호 작용에 관한 적응적 유한요소 해석 = Adaptive finite element analysis of wind-structure interactions / 유원진.
저자명 유원진 ; Yu, Won-Jin
발행사항 [대전 : 한국과학기술원, 2000].
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8011484

소장위치/청구기호

학술문화관(문화관) 보존서고

DCE 00008

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초록정보

For the efficient finite element wind analysis, using the optimal mesh is the one of the most important factors. The optimal mesh can be obtained when the errors of the solution are distributed uniformly over the entire domain. This paper presents the development of a transition element for flow analysis which has a variable number of mid-side nodes and can be effetively used in the adaptive mesh refinement by connecting the locally refined mesh to the existing coarse mesh through a minimum mesh modification. In the dynamic analysis of flow, the optimal mesh should be changed continuously in accordance with the changing error distribution and the proposed refinement/recovery scheme was found to be very effective for this purpose. The modified superconvergent patch recovery for the variable-node element is presented to estimate a posteriori error of the solution for the adaptive mesh refinement. The boundary conditions of the generated nodes by refinement process are different from those used ordinary finite element method in order to describe the singular point correctly. The numerical examples show that the optimal mesh for the finite element analysis of flow around the structures can be obtained automatically by the proposed scheme. A new finite element technique to solve the problem of wind and structure interactions is presented. Conventionally, wind analysis is performed on the Eulerian description in which the finite element mesh would not move in accordance with the wind flow. However, it is not the case in wind-structure interaction problems because nodes attached to the surface of structure should move with the displacement of structure. The arbitrary Lagangian-Eulerian (ALE) method treats the mesh and flow independently, and allow the mesh to move. In this study, the analysis domain is divided into regions of the structure, air around the structure and the interface of two regions. To satisfy the compatibility and equilibrium conditions between separated regions and to carry out the efficient analysis, rigid link is used. Also the equation of wind and that of structure are arranged in a single matrix equation. Thus the time consuming iterative solution on the interfaced surface is no longer necessary.

서지기타정보

서지기타정보
청구기호 {DCE 00008
형태사항 vi, 117 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Won-Jin Yu
지도교수의 한글표기 : 최창근
지도교수의 영문표기 : Chang-Koon Choi
수록잡지명 : "Adaptive refinement/recovery for analysis of wind around structure". Journal of aerospace engineering, ASCE, v. 12, no. 4, pp. 168-175(1999)
수록잡지명 : "Finite element techniques for wind engineering". Journal of wind engineering and industrial aerodynamics, v. 81, pp. 83-95(1999)
학위논문 학위논문(박사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 112-117
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