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원종진(C. J. Won),이종선(J. S. Lee) 한국자동차공학회 1994 한국 자동차공학회논문집 Vol.2 No.3
The effects of prebuckling on the buckling of laminated composite cylindrical shells are investigated. Both axial compression and lateral pressure are considered for laminated composite cylindrical shells with length to radius ratios usually associated with container vessels. The shell walls are made of a laminate with several symmetric ply orientations. The study was made using finite difference energy method, utilizing the nonlinear bifurcation branch with nonlinear prebuckling displacements. The results are compared to the buckling loads determined when prebuckling displacements are neglected.<br/>
원종진(C.J.Won),이종선(J.S.Lee),홍석주(S.J.Hong) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_2
The objective of this study is to investigate effects of prebuckling on the buckling of laminated composite cylindrical shells. Axial compression and lateral pressure are considered for laminated composite cylindrical shells with length to radius ratios. The shell walls are made of a laminate with several symmetric ply orientations. the study was made using finite difference energy method, utilizing the nonlinear bifurcation branch with nonlinear prebuckling displacements. The results are compared to the buckling loads determined when membrane prebuckling displacemnets are considered.<br/>
원종진(C.J.Won),이종선(J.S.Lee),이헌주(H.J.Lee) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_1
Experience and experiments show that in many cases the buckling limit is reached at a much smaller load level than is predicted by linear buckling analysis.<br/> In this paper, it is considered linear and nonlinear of plane vehicle structure and estimates design sensitivity of the cross sectional area that is composed plane vehicle structure and performs optimal design. It compares linear vehicle structure with nonlinear vehicle structure for optimal design result that is selected constraint condition of buckling load.<br/>
원종진(J.J.Won),허승진(S.J.Heo),이종선(J.S.Lee),이헌주(H.J.Lee) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper weight optimization design strategies of electric vehicle structure with aluminium space frames are studied. Strain energy estimation technique is presented for weight reduction of electric vehicle structurre with aluminium space frames. By using the technique with finite element optimizer(SUMT). weight optimiztion desigh of vehicle structure could be effective performed under the consideration of static and dynamic structural stiffness.<br/>