Vibration analysis of vehicle system with hydraulic mount using a lumped parameter model = 유체봉입마운트를 포함하는 차량 시스템의 집중매개변수 진동 해석

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A lumped mass-spring-dashpot model is often used for hydraulic mount for vibration analyses of vehicle. However, it was verified that the model can be justified only when bottom of the hydraulic mount is fixed. In order to supplement shortcomings of the model, a hydraulic model was developed in case that top- and bottom-sides of the mount vibrate. Nevertheless, it is still not possible to perform the modal analysis considering the degree of freedom due to fluid in hydraulic mount by using the existing hydraulic model because it contains only the force component. Therefore, in this study, a new method for modal analysis with hydraulic model using an additional displacement is proposed to consider the degree of freedom due to the fluid. It is experimentally verified that frequency-dependent characteristics of the hydraulic mount generates an additional mode occurring in the frequency range related to ride comfort. In addition, the vibration characteristics of additional mode related to powertrain in vehicle system, which hasn't been studied in the previous literatures, is examined through parameter studies. The present model is compared with the lumped mass-spring-dashpot model from the viewpoint of dynamic response for the different types of base excitation
Advisors
Jeon, Wonjuresearcher전원주researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2018.8,[iii, 44 p. :]

Keywords

Vehicle vibration▼aHydraulic mount▼aFrequency-dependent dynamic stiffness▼aModal analysis▼aHydraulic model; 차량 진동▼a유체봉입마운트▼a주파수 의존적 동강성▼a모드 해석▼a유체 모형

URI
http://hdl.handle.net/10203/265944
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=828451&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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