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쇽업소버 이상 소음 개선을 위한 시스템 시뮬레이션 연구
김동명(D. M. Kim),윤영환(Y. H. Yoon),김도현(D. H. Kim),송경훈(K. H. Song),이용범(Y. B. Lee) 유공압건설기계학회 2019 유공압건설기계학회 학술대회논문집 Vol.2019 No.6
The abnormal noise produced by the vehicle’s shock absorber is a complex problem in the development of the vehicle. This study identifies the cause of chuckle noise among the abnormal noise of shock absorber and suggests a reduction method. Chuckle noise from shock absorber means the noise in the 200 to 800 ㎐ band which is produced inside the cabin by a road excitation of not more than 30 ㎐. To improve the abnormal noise of shock absorber, internal structural changes may affect ride quality, and thus cause difficulties in improvement. If the shock absorber model is constructed using CAE, the abnormal noise may be improved without repeated design changes. With an emphasis on structural induced noise, such as pistons, rods and valves that make up the shock absorber, the CAE analysis technique was used to identify the mechanism of abnormal noise by the shock absorber.