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원종진,이종선,Won, Chong-Jin,Lee, Jong-Sun 대한기계학회 1996 大韓機械學會論文集A Vol.20 No.9
This paper is to practice optimal rigidity design by the strain energy density estimation method for static buckling and sizing design sensitivity analysis for dynamic buckling of a nonlinear vehicle frame structure from those results. Using these sizing design sensitivity resutls, an optimization of a nonlinear vehicle frame structure with dynamic buckling constraint is carrried out with the graient projection method.
원종진(Chong-Jin Won),이종선(Jong-Sun Lee),홍석주(Suk-Ju Hong) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_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 displacements are considered.<br/>
[구조강도부문] T형 보강재로 보강된 복합적층 원통형패널의 최적설계
원종진(Chong-Jin Won),이종선(Jong-Sun Lee),홍석주(Suck-Ju Hong) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study. using linear and nonlinear deformation theories and by c1osed-form analysis and finite difference energy methods. respectively. various buckling load factors are obatined for stiffened laminated composite cylindrical panels with T type longitudinal stiffeners and various longitudinal length to radius ratios. which are made from Carbon/Epoxy USN 150 prepreg and are simply-supported on four edges under uniaxial compression. and then for them. buckling behavior design analyses are carried out by the nonlinear search optimizer. ADS.
원종진(Ching-Jin Won),이종선(Jong-Sun Lee),이현곤(Hyun-Gon Lee) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_2
This study is object to structural analysis of continuous casting nickel-coated mold. A two-dimensional finite element model was developed to compute the temperature distribution, stress and strain behavior for continuous casting nickel-coated mold. For structural analysis using thermal analysis result from FEM code. In other to structural analysis of continuous casting nickel-coated mold, many variables such as casting speed, cooling condition, film coefficient, convection and load condition are considered.