http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배성용,배현주,김상기,Bae, S.Y.,Bae, H.J.,Kim, S.G. 한국전자통신연구원 1999 전자통신동향분석 Vol.14 No.5
번호 이동성은 기존에 사용하던 전화번호를 변경하지 않고 서비스 제공자, 위치, 서비스 종류 등을 변경할 수 있게 해 주는 능력이다. 이 중 서비스 제공자 이동성은 통신시장의 경쟁을 위하여 가장 먼저 구현되어야 한다. 본 고에서는 ITU-T의 번호 이동성 표준을 분석하여 서비스 제공자 이동성을 지원하기 위한 다양한 호 처리 방식을 각 능력군별로 소개하고, 이들 방식에 대한 장.단점을 비교.분석한다. 또한 ITU-T 번호 이동성의 향후 능력군에 대한 표준화 동향에 대해 소개한다.
부가질량 효과의 호흡모드를 고려한 구조-유체연성진동해석
배성용(S. Y. Bae) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Marine structures are often in contact with inner or outer fluid as stem, ballast and oil tanks. The effect of interaction between fluid and structure has to be taken into consideration when we estimate the dynamic response of the structure appropriately. Fatigue damages can also be sometimes observed in these tanks which seem to be caused by resonance. Thin walled tank structures in ships which are in contact with water and located near engine or propeller where vibration characteristics are strongly affected by the added mass of containing water. Therefore it is essentially important to estimate the added mass effect to predict vibration characteristics of tank structures. But it is difficult to estimate exactly the magnitude of the added mass because this is a fluid-structure interaction problem and is affected by the free surface, vibration modes of structural panels and the depth of water. I have developed a numerical tool of vibration analysis of 3-dimensional tank structure using finite elements for plates and boundary elements for fluid region. In the present study, the effect of added mass of containing water, the effect of structural constraint between panels on the vibration characteristics are investigated numerically and discussed. Especially a natural frequencies by the fluid interaction between 2 panels and a breath mode of the water tank are focused on.
배성용(S. Y. Bae) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
A liquid storage rectangular tank structures are used in many fields of civil, mechanical and marine engineering. Especially, Ship structures have many tanks in contact with inner or outer fluid, like ballast, fuel and cargo tanks. Fatigue damages are sometimes observed in these tanks which seem to be caused by resonance with exciting force of engine and propeller. Vibration characteristics of these thin walled tanks in contact with fluid near engine propeller are strongly affected by added mass of containing fluid. Therefore it is essentially important to estimate the added mass effect to predict vibration of the tank structures. Many authors have studied vibration of cylindrical and rectangular tanks structures containing fluid. Few research on dynamic interaction among tank walls through fluid are reported in the vibration of rectangular tanks recently. In case of rectangular tanks, structural coupling between adjacent panels and effect of vibration modes of multiple panels on added mass have to be considered. In the present paper, coupling effect between panels of tank structure on added mass of containing fluid, the effect of structural constraint between panels on each vibration mode for fluid region have investigated numerically and experimentally.