서지주요정보
하이브리드 트레프츠 평판 요소의 변분 수식화와 성능 평가 = Variational formulation of hybrid-trefftz plate elements and evaluation of their static performance
서명 / 저자 하이브리드 트레프츠 평판 요소의 변분 수식화와 성능 평가 = Variational formulation of hybrid-trefftz plate elements and evaluation of their static performance / 추연석.
저자명 추연석 ; Choo, Yeon-Seok
발행사항 [대전 : 한국과학기술원, 2002].
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소장정보

등록번호

8012811

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 02068

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도서상태

이용가능

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초록정보

Efficient and accurate plate bending elements based on the hybrid-Trefftz variational formulation are developed. Hybrid-Trefftz variational formulation requires two independent fields of generalized displacements. One is internal displacement fields satisfying governing differential equations of the Reissner-Mindlin plate theory, the other is boundary displacement fields with nodal displacements. Hybrid-Trefftz plate bending elements are known to be robust and free of shear locking in the thin limit because of internal displacements fields and linked boundary displacements. Also, their finite element approximation is very simple regardless to boundary shape since all element matrices can be calculated using only boundary integrals. In this study, new hybrid-Trefftz variational formulation which is based on the total potential energy principle of internal displacements and displacement consistency conditions at the boundary is derived. In order to simplify finite element approximation, line shape functions are used. Using them, quadrilateral elements and triangular elements are derived in the same way. Flat shell elements are derived by combining hybrid-Trefftz bending stiffness and plane stress stiffness with drilling dofs. With these hybrid-Trefftz elements and flat shell elements, a series of tests are performed. The proposed elements show good results in view of accuracy and convergency.

서지기타정보

서지기타정보
청구기호 {MME 02068
형태사항 vi, 70 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yeon-Seok Choo
지도교수의 한글표기 : 이병채
지도교수의 영문표기 : Byung-Chai Lee
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 35-36
주제 유한 요소법
하이브리드 트레프츠
평판 요소
변분 수식화
finite element method
Hybrid Trefftz
plate element
variational formulation
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