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정의봉(Eui-Bong Jeong),강동석(Dong-Suk Kang),최지호(Ji-Ho Choi),김한생(Han-Shang Kim),최만식(Man-Sick Choi) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10
Endurance test procedures of multipurpose tactical vehicle is constructed by comparing the Korea defence standard and TOP-2-2-506. The plan was to make the best reflect the operational environment and the actual production purposes. Endurance test of multipurpose tactical vehicle more stringent than the existing other military vehicles validation procedures. But the test plan, it is possible to reduce the cost and schedule of long verification that occurs because of the Endurance test. Through a comparison of the dynamic characteristic analysis, change of test center was to ensure the reliability and validity.
정의봉(W.D.Jeong),김봉준(B.J.Kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_2
Hydraulic engine mount is usually used for improving the noise and vibration quality. For the ideal case that the mass of orifice fluid and viscous damping coefficient are independent each other, the optimal mass and the viscous damping coefficient can be determined by the theory of dynamic absorber. In the actual case, however, the mass and the viscous damping are strongly coupled and are functions of the shape of orifice and chamber.<br/> In this paper, the governing equation of hydraulic engine mount(HEM) is derived. Damping forces in the orifice are also modeled as the function of the orifice length, orifice area and chamber area. Programs for the optimal shape design of orifice are developed. These programs are verified by the vibration testing, and applied to a quarter vehicle model.<br/>