KOSEN 한인과학기술자네트워크

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<form method="post" name="fboardlist"><input name="bo_table" type="hidden" value="sub3_1" /> <input name="sfl" type="hidden" /> <input name="stx" type="hidden" /> <input name="spt" type="hidden" /> <input name="page" type="hidden" value="1" /> <input name="sw" type="hidden" /> Development of laminate structures made of metal skin and carbon fibers reinforced polymer core for vehicles   Based on •Bolting process and performances •Layer-based stress concentration due to holes •Recycling technics         Analytical and numerical model for set-up and control of the radial-axial ring rolling process           Development of molding prediction simulator for aluminum composites   Prediction of defects in mold damage during forging of a piston to produce a high strength and lightweight piston   §New mold design  to evenly distribute the load on the mold §Johnson Cook flow-stress model and Enhanced Lemaitre Damage model to predict the forging process of the piston. §Identification of shape and stress distribution changes with forging speed §Considering heat transfer and internal flow of material (defect and overlap)         Development of Oil canning prediction method §Simple stamping test를 통한 Oil Canning 발생 주요 인자 파악 §주요 인자에 대한 영향도 분석 §Oil Canning 예측 모델 개발 (하중 및 위험 지수 예측 모델) §유한요소해석(LS-DYNA)를 통한 Stamping 및 Springback analysis §Oil Canning 위험 지수(OCDV) Pre/Post module 개발       Development of analysis techniques to improve the cross-section dimension of the shape rolling    §연구 목표: 형상압연 전용 시뮬레이터 개선 및 효율화 §연구 내용 1)GUI(Graphical User Interface) 개발을 통한 형상압연 공형설계 지원 2)SMS(Spatial Mesh System)를 이용한 해석 속도 향상 3)소재 Mesh 모델링 및 3차원 Remesh 기능 개발           Research on correlation between design styling and stiffness of outer plate  §강성 취약 지수 (Low Stiffness Index) 정의 §유한요소해석(ABAQUS)을 활용한 압입해석 à 강성 취약 부 파악 §외판 강성 시험 à 유한요소해석 검증 §해석 시간 단축을 위한 상계 해법 및 강성 행렬 계산 절차 확립 §LSI Pre/Post processor simulator 개발 §강성 취약부에대한 보강 처리 모듈 개발       </form>