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      • 排氣係 Hanger의 DPDS 向上에 關한 硏究

        박영준(Young-June Park),최중훈(Joong-Hun Choi),전승경(Seung-Kyung Jeon) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

        In automobile, Exhaust system is always loaded dynamic forces due to engine vibration in various frequency, and hanger point is main routine of structure-borne vibration into the body frame. Of course, rubber isolator play an important damping role for given frequency, the hanger point dynamic stiffness should be considered to enhance vibration isolation in vibration transfer path. For this, the mobility of rubber isolator should be in general ten times more than that of hanger. For this reason, in this paper, we studied the methodology to enhance vibration isolation of hanger. First, the principle and evaluation of DPDS throughout test was introduced. But DPDS can also be driven by CAE prediction works. So, secondly, evaluation of DPDS by CAE and correlation of test & CAE is performed for the better design efficiency. Finally, to satisfy the specification of car maker, the methodology to enhance DPDS was studied parametrically. As a result, we could have a scientific possibility of robust shape design of exhaust side hanger, which help good exhaust vibration isolation.

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