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손원희(W.H Sohn),최진환(J.H. Choi),이순걸(S.G Lee),박동창(D.C. Park),류한식(H.S. Ryu),배대성(D.S. Bae),허건수(K.S. Huh) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.5_2
An experimental study of dynamic track tension for high mobility tracked vehicle is investigated and compared to multibody dynamic simulation model. This research focuses on a heavy military tracked vehicle which has sophisticated suspension and rubber bushed track systems in computer model of the track tension. In order to obtain accurate dynamic track tension of track subsystems, each track link is modeled as a body which has six degrees of freedom. A compliant bushing element is used to connect track links. Various virtual proving ground models of Chang-Won proving ground are developed to observe dynamic changes of the track tension. The obtained empirical results of the dynamic track tension are comparcd against the simulation studies. <r.B.7]~%<>1 : Tracked Vehicle{;>~£,"j-"J), Trnck Link(;>~£"83), Dynamic Trnck Tension(%"'1 ;>~£"J-;;:j), Compliant Bushing (%<;! .!J!.>-J), DTJS("J-;;:j ~;;<.j A16 ',iJ)
신장호(J.H.Shin),김상두(S.D.Kim),최진환(J.H.Choi),이승종(S.J.Yi) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
In this study, a procedure is presented for the dynamic analysis of a multibody tracked vehicle system. The plannar vehicle model used in this investigationis assumed to consist of two kinematically decoupled subsystems,i.e.,the chassis subsystem and track subsystem. The chassis subsystem includes the chassis frame, sprocket,idler and rollers, while the track subsystem is repersented as a closed kinematic chain consisting of rigid links interconnercted by revolute joints. The recursive kinematic and dynamic formulation module of the vehicle will be developed and nonlinear contact force modules describing the interaction between track links, and sprocket, idler, rollers and ground will be also developed.<br/>
신장호(J.H. Shin),최진환(J.H. Choi),이승종(S.J. Yi) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
In this study, a procedure is presented for the dynamic analysis of a multibody tracked vehicle system. The plannar vehicle model used in this investigation is assumed to con ubsystem. The chassis subsystem includes the chassis frame, sprocket, idler and rollers, while the track subsystem is represented as a closed kinematic chain consisting of rigid links interconnected by revolute joints. The recursive kinematic and dynamic formulation module of the vehicle will be developed and nonlinear contact force modules describing the interaction between track links, and sprocket, idler, rollers and ground will be also developed.<br/>
고속궤도차량의 로드휠과 궤도의 접촉 강성 및 감쇠계수에 대한 실험적연구
김종수(J.S.Kim),방동창(D.C.Park),김재용(J.Y.Kim),최진환(J.H.Choi) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
An experimental study is presented for the contact property of the interactions between road wheel and track link in order to identify the dynamic characteristics of the tracked vehicle along the vertical direction and the loading conditions. The revolving rubber molded track link and road wheels are subjected to the reaction forces from the ground, the traction forces from the engine which lead to the tension, compression, and torsional load as the operational conditions and environment. The dynamic effect of the contact stiffness and damping coefficients between road wheel and track link is illustrated by using experimental methods which can be used to the dynamic simulation of the multibody tracked vehicle.
수치해석 프로그램을 이용한 미디어 이송 장치의 기구학적 최적설계
이순걸(S. G. Lee),최진환(J. H. Choi),배대성(D. S. Bae),조희제(H. J. Cho),송인호(I. H. Song),김민수(M. S. Kim) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
This paper shows the design optimization of the paper feeding mechanism under dynamic behavior by using commercial codes of RecurDyn/MTT2D and RecurDyn/AutoDesign which are developed by FunctionBay, Inc. A virtual mockup for dynamics analysis of the paper feeding mechanism is build on RecurDyn/MTT2D and is simulated. Flexible paper is represented as a series of rigid bars connected by revolute joints and rotational spring dampers. Paper is fed by a contact and friction mechanism on rollers or guides. The slip of the paper and nip force of rollers are measured to estimate the system performance. After a simulation, these performances are automatically send to RecurDyn/AutoDesign which is a sequential approximate optimization tool based on the response surface modeling. RecurDyn/AutoDesign makes the approximate objective function and computes the optimized design points of the design variables and gives them to analysis tool. And then the simulation is repeated with the updated design variables. These processes are repeated until finding a tolerable design optimization. In this paper, a paper feeding mechanism is introduced and it is optimized with the proposed algorithms.