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정승현(Seung-Hyun Chung),최형길(Hyoung Gil Choi),이장무(Jang Moo Lee),박춘기(Choonki Park),조성선(Sung Sun Cho),정인승(Inseung Chung) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
Damping shims are broadly used for the purpose of reducing the squeal noise of disc brake systems. Although the<br/> effects of the damping shims are well known practically, the analytical studies have not been carried out sufficiently.<br/> In this paper, we conducted the complex eigenvalue analysis of the finite element model of a brake system with<br/> several kinds of damping shims and investigated the effects of damping shims in variation of their material properties<br/> and contact conditions. Each damping shim was modeled as an equivalent single-layer instead of a multi-layered<br/> model. Also, noise dynamometer test were performed and the test results were in accordance with the analysis results.
조성선 인천교육대학 기전문화연구소 1992 기전문화연구 Vol.21 No.-
Ethnical custom is a prefect and outcome which is originated and formed in the common environmental community. Even though through the partial investigation, we can trace back the deep rooted religious faith and wisdom and true picture of our ancestors. In this survey, we investigated the way of life in NonHyon - dong and Kojan -dong area in Inchon city.