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J. Ocean Eng. Technol. 2009;23(5):45-53.    

Fatigue Characteristics of Engine Rubber Mount for Automotive
Suh Chang-Min,Oh Sang-Yeob,Park Dae-Kyu,Jang Ju-Ho
School of Mechanical Engineering Kyungpook National University,School of Mechanical and Automotive Engineering Kyungpook National University,School of Mechanical Engineering Kyungpook National University,School of Mechanical Engineering Kyungpook Nati
자동차용 엔진 마운트의 피로거동에 관한 연구
서창민,오상엽,박대규,장주호
경북대학교 공과대학 기계공학부,경북대학교 이공대학 기계자동차공학부,경북대학교 공과대학 기계공학부,경북대학교 공과대학 기계공학부
© 2009 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Automotive, Engine mount, Fatigue characteristic, FEA
핵심용어: 자동차, 엔진 마운트, 피로특성, 유한요소해석
Abstract
In this study, Finite Element Analysis (FEA) was used to decide three kinds of material property of vibration proof rubber with the unique characteristic of non-linear and large deformation. As well, three types of hardness (Hs 50, 55, 60) were compared with the result of fatigue tests, fatigue life was able to be predicted. The request for fatigue life becomes strict more and more as increasing stress under conditions like a compaction, high load and high temperature for parts because it is main characteristics of rubber mount for automotive. Regarding to the fatigue life under dynamic deformation condition, it can be predicted as checking forced deformation extends and its frequency and its strain-life curve. As for material property tests of uniaxial tension test, uniaxial compression test, pure shear test, Ogden model was used for FEA by observing relations between stress and strain's rate as curve fitting. As a result of FEA, fatigue life for rubber mount was predicted and accorded well with the experimental data of fatigue test with hourglass specimens. In addition, its property of the predictable fatigue life method suggested in this study was accorded well with the experimental data by comparing the predicted fatigue life of FEA with the result of fatigue test for rubber component of engine rubber mount.


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