http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
자동차용 Power Steering Tube Line의 진동 해석을 위한 Modeling에 대한 연구
유계형(G.H.Ryu),신귀수(G.S.Shin),김동우(D.W.Kim),이기형(K.H.Lee),정인성(I.S.Jung) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_2
This paper studies the effect of vibrational characteristics of a power steering tube analyzed though simulation and experiment. By an experiment analysis and a simulation analysis we found out that the factor of PS system vibration is fluid-structure interaction of tube line. Also, a new method of vibration analysis of fluid-filled piping system is developed. Analytic solutions transformed into the same form as finite-element equations are used for longitudinal, bending and torsional motion of straight, curved and double curved parts of tubes.<br/> From the results of the experimental studies and simulation modeling analysis for vibration of power steering system, we following results of the experiment FRF characteristics and mode shape through tube geometry and filled-unfilled oil of static tube condition that found out increasing natural frequency, and curved parts of tube line of characteristic is dissipate.<br/>
신귀수,이기형 한국산업안전학회 1998 한국안전학회지 Vol.13 No.2
This is a study on the natural vibration characteristics of Vehicle frame. Nowadays, many trucks freight the over-load, do the car designers consider the over-load about 200% in the design. It's necessary to make the model of a vehicle and simulate it for the test of driving condition, durability and vibration behavior before the vehicle is manufactured. If it is possible to make a simulation using the static and dynamic analysis, this is very useful in accomplishing an optimal design of the vehicle. In this paper, we studied the vibration characteristics of a truck body frame. The automobile body frame model for experiment is made smaller than real size frame with the ratio of 1/10. The vibration characteristics of a frame is considered as one of main factors in analyzing and improving the problem for ride comfort, noise and vibration reduction. Therefore, we experimented two method to neglect the nonlinearity. First is bolting and second is welding at the joint section. We compared computer simulation results and experimental data.
최적 설계법을 이용한 구조물 안전을 위한 질량 감소 연구
신귀수,이기형,정인성 한국산업안전학회 1998 한국안전학회지 Vol.13 No.1
This paper is presented that theoretical optimization design method in order to consider mass reduction for the structural safety. In this paper, it described methods for reducing vibration in structural safety by the determination of the optimum sizes and locations of running masses through formal mathematical optimization techniques. The optimization procedure which employs the tunning masses and corresponding locations is developed. Design variables are systematically changed to achieve low values of shear without a large mass penalty. Three optimazation methods are developed and tested. The first is based on minimizing the modal shaping parameter which indirectly reduce the modal shear amplitudes corresponding to each harmonic of airload. The second method reduces these amplitudes directly and the third method reduces the shear as a function of time during a revolution of the blade. The first method works well for reducing the shear for one mode responding to a single harmonic of the airload but has been found in some bases to be ineffective for more than one mode.
쇼크 업소버의 소음 발생 요인과 진동감쇠 특성에 관한 연구
박태원,신귀수,이기형,김경모,정인성 한국산업안전학회 1998 한국안전학회지 Vol.13 No.4
Shock absorber has a great influence on the performance of the vehicle(ride comfort, manipulation, noise, vibration, turning, stability). Therefore, in this study we consider theoretically about general damper, variable damping oil damper, the control of vehicle Characteristics for the suspension, and undesirable phenomenon. And we measured the vibration/noise characteristics of shack absorber for the real car experimentation, strain change, and noise characteristics of shock absorber using experimental equipment. The study of domestic company and research institute on the vehicle shock absorber is active, but that of basis is not. So we think that they should be accomplished actively. Therefore, this paper will develop theoretical system on the vibration/noise characteristics of shock absorber by theoretical consideration and experimental result analysis of dynamic characteristics of shock absorber that were accomplished in this study. Then we will use it as the optimistic design data for shock absorber development.