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유한차분법을 이용한 비등방성 복합적층판의 안정성에 관한 연구
백한솔,이상열,장석윤 서울시립대학교 산업기술연구소 1998 산업기술연구소논문집 Vol.6 No.1
The solution of anisotropic plates using classical methods is limited to relatively simple load and boundary conditions. If these conditions are more complex, the analysis becomes increasingly tedious and even impossible. For many plate problems of considerable practical interest analytic solutions to the governing differential equations cannot be found. Among the numerical techniques presently available, the finite difference method(FDM) is a powerful numerical method. The objective of this paper is to analyze stability of anisotropic composite laminated plates considering shear deformation. In applying numerical methods to slove differential equations of anisotropic plates, this study uses the finite difference methods. In determining the eigenvalue for unsymmetric system matrix by FDM, this paper uses the householder method in IMSL(International Mathematical Software Library). Several numerical examples show the effectiveness of this study and they will give a guide in deciding minimum buckling load and various mode shapes.
조병준,백한솔,장석윤 서울시립대학교 산업기술연구소 1999 산업기술연구소논문집 Vol.7 No.-
The commonly used composite beam is the integrated structure beam to effectively resister the external force by mixing different materials and is designed for economically and efficiently utilizing advantages of each materials. However, the design standard and specifications for composite beam have been behind comparing with design standard of steel and reinforcing rod concrete structure. Especially there is no any independent specified standard for reclamation type composite beam. Therefore, the exsiting design process were derived by the problem of excessive design. For preventing excessive design, this study suggests the revised strength design process. An experiment results show that the revised strength design process is more reasonable and economical process than the exsiting design process.