A Study on the Affection of Frequency and Displacement for Nonlinear Viscoelastic Bushing Model

비선형 점탄성 부싱모델에 대한 주파수와 변위의 영향에 대한 연구

  • Kim, Sung-Jin (Department of Mechanical Engineering, Graduate School, Inje University) ;
  • Min, Je-Hong (Corporate Technology Operations, Samsung Electronics Co., Ltd) ;
  • Lee, Seong-Beom (School of Mechanical & Automotive Engineering, Inje University)
  • 김성진 (인제대학교 대학원 기계공학과) ;
  • 민제홍 (삼성전자 CTO전략실) ;
  • 이성범 (인재대학교 기계자동차공학부)
  • Published : 2003.12.31

Abstract

A bushing is a device used in automotive suspension systems to reduce the load transmitted from the wheel to the frame of the vehicle. A bushing is a hollow cylinder, which is bonded to a solid steel shaft at its inner surface and a steel sleeve at its outer surface. The relation between the force applied to the shaft and the relative deformation of a bushing is nonlinear and exhibits features of viscoelasticity. A force-displacement relation for bushings is important for multibody dynamics numerical simulations. For the nonlinear viscoelastic axial response, Pipkin-Rogers model, the direct relation of force and displacement, has been derived from Lianis model and the sinusoidal input was used fer Pipkin-Rogers model, and the affection of displacement with frequency change was studied with Pipkin-Rogers model.

부싱은 차체로 전달되는 하중을 줄여주는 역할을 하는 자동차 현가장치의 부품으로 바깥쪽 슬리브와 안쪽의 축 사이에서 가운데가 비어있는 실린더의 형상을 가진다. 축에 작용되는 하중과 부싱의 상대 변위는 비선형 점탄성 성질을 나타내며, 부싱에서 힘과 변위의 관계는 다물체 동역학 시뮬레이션에 중요하다. 비선형 점탄성 축방향모드에 대하여 힘과 변위와의 직접관계식인 ??킨-라저스 모델을 리아니스 모델로부터 유도하였으며, 사인함수의 변위를 ??킨-라저스 모델에 적용하여 주파수와 변위의 변화가 비선형 점탄성 부싱 모델에 미치는 영향에 대하여 알아보았다.

Keywords

References

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