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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.1
- 수록면
- 121 - 128 (8page)
이용수
초록· 키워드
오류제보하기
Enhanced lower order shear deformation theory is developed in this study. Generally, lower order theories are not adequate to predict accurate deformation and stress distribution through the thickness of laminated plate. For the accurate prediction of detailed stress and deformation distributions through the thickness, higher order zigzag theories have been proposed. However, in most cases, simplified zigzag higher order theory requires C₁ shape functions in finite element implementation. In commercial FE softwares, C₁ shape functions are not so common in plate and shell analysis. Thus zigzag theories are useful for the highly accurate prediction of thick composite behaviors but they are not practical in the sense that they cannot be used conveniently in the commercial package. In practice, iso-parametric C? plate model is the standard model for the analysis and design of composite laminated plates and shells. Thus in the present study, an enhanced lower order shear deformation theory is developed. The proposed theory requires only C? shape function in FE implementation. The least-squared energy error between the lower order theory and higher order theory is minimized. An enhanced lower order shear deformation theory(ELSDT) in this paper is proposed for smart structure under complex loadings. The ELSDT is constructed by the strain energy transformation and fully coupled mechanical, electric loading cases are studied. In order to obtain accurate prediction,zigzag in-plane displacement and transverse normal deformation are considered in the deformation field. In the electric behavior, open-circuit condition as well as closed-circuit condition is considered. Through the numerous examples, the accuracy and robustness of present theory are demonstrated
목차
Abstract
1. 서론
2. 고차 지그재그 이론의 정식화
3. 저차 전단 변형 이론의 정식화
4. 수치 예제
5. 결론
후기
참고문헌
참고문헌 (23)
참고문헌 신청
Lo, K. H., Christensen, R. M., and Wu, F. M., 1977, “A Higher-Order Theory of Plate Deformation Part 2: Laminated Plates,” Transaction of the ASME J. App. Mech., Vol. 44, pp. 669~676.
Levinson, M., 1980, “An Accurate Simple Theory of the Statics and Dynamics of Elastic Plates,” Mech. Research Communications, Vol. 7, pp. 343~350.
Reddy, J. N., 1987, “A Generalization of Two-Dimensional Theories of Laminated Plates,” Comm. in Num. Meth. In Eng., Vol. 3, pp. 173~180.
Cho, M. and Parmerter, R. R., 1992, “An Efficient Higher-Order Plate Theory for Laminated Composites,” Composite Structures, Vol. 20, pp. 113~123.
Carrera, E., 2003, “Historical Review of Zig-Zag Theories for Multilayered Plates and Shells,” Applied Mechanics Review, Vol. 56, pp. 287~308.
Levinson, M., 1980, “An Accurate Simple Theory of the Statics and Dynamics of Elastic Plates,” Mech. Research Communications, Vol. 7, pp. 343~350.
Reddy, J. N., 1987, “A Generalization of Two-Dimensional Theories of Laminated Plates,” Comm. in Num. Meth. In Eng., Vol. 3, pp. 173~180.
Cho, M. and Parmerter, R. R., 1992, “An Efficient Higher-Order Plate Theory for Laminated Composites,” Composite Structures, Vol. 20, pp. 113~123.
Carrera, E., 2003, “Historical Review of Zig-Zag Theories for Multilayered Plates and Shells,” Applied Mechanics Review, Vol. 56, pp. 287~308.
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