Bar와 Beam 구조물의 기본적인 유한요소 모델의 수치해석
(주)코리아스칼라
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- 2016.05.03
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- 2013.03
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서지정보
ㆍ발행기관 : 한국복합신소재구조학회
ㆍ수록지정보 : 복합신소재구조학회 논문집 / 4권 / 1호
ㆍ저자명 : Ryu, Yong-Hee, Ju, Bu-Seog, Jung, Woo-Young, Suchart Limkatanyu
목차
1. Introduction
2. Numerical Methods
3. Evaluation of Finite Eelment Analysis
4. Conclusion
Acknowledgements
References
영어 초록
The finite element analysis (FEA) is a numerical technique to find solutions of field problems. A field problem is approximated by differential equations or integral expressions. In a finite element, the field quantity is allowed to have a simple spatial variation in terms of linear or polynomial functions. This paper represents a review and an accuracy-study of the finite element method comparing the FEA results with the exact solution. The exact solutions were calculated by solid mechanics and FEA using matrix stiffness method. For this study, simple bar and cantilever models were considered to evaluate four types of basic elements - constant strain triangle (CST), linear strain triangle (LST), bi-linear-rectangle(Q4),and quadratic-rectangle(Q8). The bar model was subjected to uniaxial loading whereas in case of the cantilever model moment loading was used. In the uniaxial loading case, all basic element results of the displacement and stress in x-direction agreed well with the exact solutions. In the moment loading case, the displacement in y-direction using LST and Q8 elements were acceptable compared to the exact solution, but CST and Q4 elements had to be improved by the mesh refinement.
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