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TCS요소를 이용한 케이블-막 구조물의 초기형상해석 및 응력변형해석
송평훈(Song. Pyung-Hun),송호신(Song. Ho-San) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.7
Finite element formulations for geometrical nonlinear analysis of pretensioned membrane and cable reinforced<br/> membrane structures with a Triangular Constants Strain element are presented. The total lagrangian formulation<br/> (T.L.F.) is introduced in the nonlinear incremental iterative procedure. Based on these theoretical formulations, a<br/> FE nonlinear analysis program is developed. In order to show the validity of the presented formulation and<br/> program, initial shape finding analysis and stress-deformation analysis for membrane and cable reinforced<br/> membrane structures are carried out. The results are in good agreement with the results available in the existing<br/> literature.
이동된 요소를 갖는 케이블-막 구조물 해석을 위한 ALE 유한요소 알고리즘 개발
송평훈(Song Pyung-Hun),김재열(Kim Jae-Yeol),이진호(Lee Jin-Ho),송호산(Song Ho-San) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.3
The purpose of this study is development of a finite element algorithm to find out the stressed condition, slipped direction and<br/> slipped dimension when some elements of cable-membrane structures are slipped from it's initially designed coordinates by<br/> external loads as wind or non uniform load and so on. In order to search the slipped behaviors of cable-membrane structures, a<br/> Arbitrarily-Lagrangian-Eulerian(ALE) finite element formulation is introduced. In these procedures, a stiffness matrix related with<br/> ALE concept is formulated and a FE analysis program for cable-membrane structures with slipped elements is developed. Various<br/> examples for cable and membrane structures are presented to verify the program's validation. The results are shown good<br/> agreement with that of existed one.
Catenary 곡면을 갖는 막구조물의 치환기법에 관한 연구
임채욱,송평훈,김승덕,송호산 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
Membrane structure systems and cable net structure systems are attracting people's attention as they are used in many buildings because of their light materials and airy appearances. If a membrane structure system or a cable net structure system does not have sufficiently high initial stiffness, it may be in unstable state. But if the initial stiffness is secured, the system will be in stable state. In this study the nonlinear finite element formulae for membrane and cable members considering geometric nonlinearity is derived, and then a catenary's membrane structure, and a tension membrane structure by Nass(Nonlinear Analysis for Spatial Structures) program is analyzed. The suitable scheme, which membrane structure are assigned by cable elements for overcoming the unfitted shape problem, is shown that the section of cable is assigned by element's area.