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박태원,김상중,박찬종(T.W.Park),S.J.Kim,C.J.Park 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Using of computers in design is a trend in recent years. A good suspension model is depend on the carefully prepared data like joint connection points or spring stiffness, etc.<br/> Once a good computer model is obtained, a parametric study for specific suspension design factor, like a toe angle, can be done to obtain sensitivity information. Using this information, several important design parameters for a specific design factor can be identified. Once a design of experiments is done using computer models, the results can be used to approximate a function which can best represent the experimentation. An optimum solution of this function can be used to fined an optimum design of a suspension system for a specific suspension design factor. Same method is again applied to other design factors iteratively until a good suspension system design is obtained.<br/>
소형버스의 동역학 해석을 위한 판스프링 모델링기법 개발
박태원(T. W. Park),임홍재(H. J. Yim),이기호(G. H. Lee),박찬종(C. J. Park),정일호(I. H. Jeong) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
A leaf spring plays an important role in a passenger bus. Since characteristic of a leaf spring has a hysteresis behavior, a modelling technique for a leaf spring is an imPortant issue for a passenger bus analysis. In this paper, modelling technique for a leaf spring is presented. First, non-linear FEM model of a leaf spring is constructed then it is used to make an approximated model to be used in dynamic analysis. The modelling procedure is explained in step by step approach. Then. this model is applied to mini-bus dynamic analysis with flexible body and non-linear dynamic force element and the results are compared with test data.<br/> <br/>
박태원(T. W. Park),임홍재(H. J. Yim),이기호(G. H. Lee),박찬종(C. J. Park),정일호(I. H. Jeong) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Ride harshness is the important characteristic for a passenger bus. Since ride generally involves frequencies up to 30 Hz, special modelling technique should be used for ride harshness analysis. This paper investigates modelling technique of a passenger bus for ride analysis which involves coupling of rigid bodies and flexible bodies in one model. First step is to build a rigid model and next step is to establish FEM model of a bus body and leaf springs. Then, prepared FEM model is coupled with the rigid model Computational results of the coupled bus model is compared with the testing results. Then, sensitivity analysis was carried out to suggest the direction for the ride quality improvement.<br/> <br/>
거대 ( 巨大 ) 한 십이지장게실증 ( 十二指腸憩室症 )
김영식(Y.S. Kim),김승진(S.J. Kim),박찬종(C.J. Park) 대한소화기학회 1970 대한소화기학회지 Vol.2 No.1
The author experienced a case of large dv.odenal diver:iclosis in a 68 year old Korean female. The case is presented with the complains of epigastralgia with fullness, nausea, and vomiting, whose diagnosi.- ivas readily established by a Barium .'Vieal Upper G.I. Se: ies. On admission there is no specific signs and Jaboratory findings exept a large duodenal diver.iculum by means of upper G,I, series. During adnsission the case did no: develop particular complica'.ion.':, and also any kind of opera.ive procedure;I as done. Foiloiving only medical treatmen'; of s>mpomatic viei of gastroen.eri!is, the case felt re!atively ivell, and discharged 7 days after admisio.I several poin'.s concerning the clinical views of duodenal diverticuIa ivere briefly discu:sed.