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자동차엔진용 고압연료 공급 파이프의 고유진동수 해석 및 진동시험
손인수 ( In-soo Son ),허상범 ( Sang-bum Hur ),안성진 ( Sung-jin Ahn ) 한국산업융합학회 2021 한국산업융합학회 논문집 Vol.24 No.4
The purpose of this study is to obtain the natural frequency of fuel supply pipes for vehicle engines through modal analysis and testing and compare the resulting values to ensure the reliability of the analysis. In other words, in this study, we obtain the unique frequency of the fuel pipe of the vehicle engine through analysis and testing and compare its results. Comparing the natural frequency obtained through analysis and testing, the first and third vibration modes obtained accurate natural frequency results of less than 1% and very similar results of less than 5% maximum error over the fourth vibration modes. These results are determined that if design changes of fuel pipes are made depending on the vehicle in the future, there will be no problem in obtaining the natural frequency of pipes that have been changed by analysis. Through future analysis and testing, durability and stability evaluation of connections of fuel supply pipes for vehicle engines will be carried out.
마운팅부 영향인자에 따른 래치의 예상수명 시뮬레이션과 개발기간 개선에 대한 연구
박현태(Hyeon-Tae Park),전남규(Nam-Kyu Jeon),여덕종(Deok-Jong Yeo),윤성민(Sung-Min Yoon),허상범(Sang-Bum Hur) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Mostly automotive latch fatigue has been proved by predict stiffness analysis and breaking strength test or direct durability test. Durability test needs dozens of days by design lifecycle and same by changing various factors. We use MSM(Modal Superposition Method) which predicts fatigue by adapting modal stress & modal displacement in Fe-Safe, after stiffness and modal analysis using Abaqus. In addition, We proved analysis accuracy by compare direct endurance test data, expecting to be able to reduce development time by predicting design lifecycle of brand new latch system through the result.