http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
K&C 시험에 의한 함수형 현가장치 모델링 및 차량동역학 해석
김상섭(Sangsup Kim),정홍규(Hongkyu Jung) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_2
This paper presents an enhanced lumped parameter vehicle dynamic modeling method that includes kinematic and compliance characteristics of suspensions more accurately. The relative displacement and orientation of a wheel with respect to car body are represented as a functio of the vertical displacement of the wheel. A unique representation of the cartesian relative velocity and acceleration of the wheel is derived using the suspension displacement function. The system equations of motion for functional suspension model are systematically derived by using velocity transformation method. The comparison of test and simulation results demonstrates the validity of the proposed functional suspension modeling method.
토션빔의 단면형상 및 위치의 변경에 따른 현가 시스템의 기구정역학 해석
김상섭(Sangsup Kim),이상범(Sangbum Lee),정홍규(Hongkyu Jung),이춘승(Chunsung Lee) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_2
A torsion beam suspension in widely used in front where drive vehicle because of its simplicity and lightweight. The kinematic and compliance characteristics of the torsion beam suspension are strongly dependent on the cross-sectional shape and attachment location of the torsion beam, since the torsion beam is usually designed as a V and U shaped opened channel, torsional and warping deformations occur during car body roll, For accurate modeling of the torsion beam suspension, we need to model the torsion beam as a finite element model. This paper presents the construction of the torsion beam suspension model using ADAMS/Car with flexible beam model. The suspension characteristics such as roll understeer, lateral force compliance steer, roll center height, and roll stiffness are analyzed with varying cross-sectional shape and beam thickness, and fore-aft attachment location of the torsion beam.<br/> <br/>
6시그마 설계의 IDDOV 모델을 이용한 제동시 이상 진동 품질개선
김효식(Hyosig Kim),김상섭(Sangsup Kim),임홍재(Hongjae Yim) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Design for Six Sigma(DFSS) will have a major influence on the future design, if it is applied during the conceptual design phase or design change phase. This paper discusses an approach of Design for Six Sigma using IDDOV model in order to improve braking quality. Because the proposed model focus in preventing failures from happening and can be effectively applied to stages of research, design and development. The proposed model is more effective than the existing models, such as, DMAIC. This will result in more improved but less expensive satisfaction of customer. Examination of results according to the design strategy makes clear the reason why the DFSS with IDDOV model is necessary.
이길용(Guilyong Lee),김상섭(Sangsup Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Studies for a vehicle dynamics model including kinematic and compliance characteristics of the suspension have not been actively these days. The purpose of this paper is to determine steady-state reponses of a vehicle by using the verified functional suspension vehicle dynamics model. First section 2 will show that the differential equation of motion in the functional suspension vehicle dynamics model have 10 degrees of freedom. In the first part of section 3, it will be demonstrated that the differential equations are converted to a set of algebraic equations in the steady-state responses characteristics. Finally, in the same chapter, equations of motion will be shown to have 10 degrees of freedom and 9 variable states in terms of algebraic equations. These equations can be solved by using the Guass-Newton Method, which is one of numerical methods. In section 4, these simulation results are compared with those obtained from a transient dynamic analysis, J-Turn simulation, in order to demonstrate that they are almost the same. Section 5 will focus on the fact that steady-state analysis can be used for understanding cornering behavior results. A steady-state analysis using a functional suspension vehicle dynamics model is an effective analysis method for getting vehicle steady-state responses because it help to get vehicle data with ease and shortens the amount of computer simulation time.
On-Center Handling 해석을 위한 비선형 조향시스템 및 차량 모델의 개발
박진국(Jinkuk Park),김상섭(Sangsup Kim),정홍규(Hongkyu Jung),박준홍(Joonhong Park),이준모(Joonmo Lee) 한국자동차공학회 2003 한국자동차공학회 Symposium Vol.2003 No.9
This paper presents a modeling method to predict on-center behavior of vehicle using computer simulation, Functional suspension model was used to derive full vehicle dynamic model for efficient simulation, The functional suspension model is able to model the kinematic and compliance characteristics more accurately than existent lumped parameter vehicle dynamics models. A nonlinear steering system model was developed for rack-and-pinion steering system. Included in the model are friction. stiffness and damping characteristics of steering system and nonlinear boost curve shape. The simulation results of on-center handling for the full vehicle model with the steering system shows a good correlation with the test results. This demonstrates the validity of the vehicle and steering models and the effectiveness of the modeling method to predict the on-center handling characteristics of the vehicle