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김병삼(B.S.Kim),이태근(T.K.Lee),홍동표(D.P.Hong),양성모(S.M.Yang),정태진(T.J.Chung) 한국자동차공학회 1993 오토저널 Vol.15 No.2
The vibration characteristics of radial tire are studied. In order to obtain theoretical natural frequency and mode shape, the plane vibration of a tire is modeled to that of circular beam. By using the Tielking method based on Hamilton's principle, theoretical results are determined by considering tension force due to tire inflation pressure, rotational velocity and tangential, radial stiffness. Modal parameters varying the inflation pressure are determined experimentally by using the transfer function method. Results show that material property and wear are parameter for shifting of natural frequency and damping.
김병삼(B.S.Kim),이태근(T.K.Lee),홍동포(D.P.Hong),양성모(S.M.Yang),정태진(T.J.Chung) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The vibration characteristics of radial tire in affecting vehicle ride quality and road noise is studied. Modal parameters under inflation pre-ssure are determined experimentally by using of transfer function method. The natural frequencies and damping factors of radial tire are very impor-tant in vehicle ride and road noise. In this paper, natural frequencies and damping factor is determined by analysis of experimental data using 2-Channel FFT Analyzer.<br/>
이규종,박병규,이태근,황연,김철진,최성철,Lee, K.J.,Park, B.K.,Lee, T.K.,Hwang, Y.,Kim, C.J.,Choi, S.C. 한국결정학회 2000 韓國結晶學會誌 Vol.11 No.1
Hydrothermal synthesis of find CeO₂ powder has been investigated. Synthesis was performed with Ce(NO₃)₃·6H₂O, in ethanol and water solution. Mineralizer were NH₄OH and KOH and reaction for the powder synthesis has performed at 130℃. The morphology of CeO₂ was nearly spherical in using NH₄OH and cubic form in KOH. Particle size increased with addition of NH₄OH. Ethanol solution was effective to reduced the agglomeration.
김병삼(T.K. Lee),이태근(B.S. Kim),홍동표(D.P. Hong),지창헌(C.H. Chi) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_1
A theoretical model has been prepared, which describes the noise generated by tire/road interaction for the tire structure-borne sound analysis. The model begins with a set of thin shell equations describing the motion of the belt of a radial ply tire, as drived by Bohm("mechanisms of the belted tire", lngeniur- Archiv, XXXV, 1966). Structural quantities required for these equations are derived from material properties of the tire. The rolling shape of a tire is computed from the steady-state limit of these equations. Vibrational response of the tire is treated by the full dependent shell equations. The force input at the tire/road interface is calculated on the basis of tread geometry and distribution of contact patch pressure. Radiation of noise is calculated by a Kirchhoff- Helmholtz integral theorem.<br/> <br/>