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동역학 S/W와 연계한 회전체 제어의 모델링에 관한 연구
이원창(W. C. Lee),김성원(S. W. Kim),김재실(J. S. Kim),최헌오(H. O. Choi) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
This study provides the method to build the rotor system model using dynamic analysis software. also, it introduces the traditional methods of the rotor system modeling and informs the each merits and demerits. We will make up the flexible system of rotor system model with ADAMS, multi-body dynamics S/W, in order to develop dynamics model and get the response of plant model near to real model through connection the SIMULINK of MATLAB. We will develop the computing dynamics-controling model possible controlled simulation similar to a real model with controlling the plant model.
직동형 릴리프밸브의 오버라이드 저감을 위한 포펫 형상 설계요소 연구
김성원(S. W. Kim),서영민(Y. M. Seo),안현식(H. S. Ahn) 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.6
A direct acting relief valve, of which the override is one of the important issues, is major hydraulic element for controlling pressure and flow in hydraulic actuating systems. Therefore, the research of reducing override of the valve has always been an important topic for decades. Among many design factors of the direct acting relief valve, the shape of the valve poppet is the one that can directly affect the performance the most. Based on previous studies of poppet valve, an actual model is considered as equivalent to the simplified model. The steady flow force acting on the poppet is calculated by momentum theorem applied to the control volume. This paper represents some simulation methods to investigate the flow force effects depending on the shape of the poppet with sharp-edged seat. The result shows that the flow force on poppet is highly affected by inlet/outlet opening areas, poppet tip angle, and poppet plate angle.
김성원(S.W. Kim),김선경(S.K. Kim) 한국소성가공학회 2010 금형가공 심포지엄 Vol.2010 No.11
In this study, we have investigated bonding of metal and plastic parts with single planar interface. This is facilitated by surface processing of metal part, which consists of slitting and punching. We also have conducted simulation of the injection molding process. Tensile and bending shear adhesion tests are fulfilled according to KS M3734 and KS M3723, respectively. To test the impact resistance, a drop test has been conducted under a realistic situation. Based on the tests results, the proposed bonding method outperforms existing methods based on adhesion.