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특수목적 차량용 샤시의 내구성능 평가를 위한 등가하중 신호 개발
정휘권(Hwee Kwon Jung),박규해(Gyuhae Park),강지상(Jisang Kang),고환규(Hwan Kyu Kho),박병식(Byung Sik Park),정명철(Myungchuel Jung),정길성(Gilsung Jung) 한국자동차공학회 2018 한국자동차공학회 지부 학술대회 논문집 Vol.2018 No.5
Assessment of durability is an essential in early stages of development. In these stages, tuning parts and geometry of a vehicle are not determined. In addition there are no available physical prototypes. Therefore, numerical durability analysis with a reasonable load signal is required. We propose several techniques to produce an equivalent load signal for numerical durability analysis. The acceleration signals are measured through a prototype vehicle test on various road conditions and converted into force and displacement signals, respectively. The signals are then refined and a representative segment of the signal is selected by considering the statistical characteristics, frequency component and fatigue damage. Finally the equivalent load signals are produced from the selected representative signal based on a time correlated damage editing method. For validation of the proposed techniques, comparison of the signal characteristics and a series of numerical analysis are planed to be carried out.