Based on road and bench test, abnormal noise mechanism and reduction measures in twin-tube hydraulic absorber were studied, and fluid dynamic models of the damper orifices, disc valves and spring valves were established by using AMESim software and validated by the test results. Through the numerical simulation and damping parameters impact analysis, the state of the orifice cavitation appears in the compression and rebound stroke was determined, and relationship between orifice cavitation, abnormal vibration of the rod and the orifice, inflation pressure were found. In order to reduce the abnormal vibration noise of the damper, further improvements in abnormal noise clearing were proposed on the premise of guaranteeing the external characteristics of the damper.
AN Songgwang,CAO Yang,ZHANG Jianwu
. Hydraulic Shock Absorber Orifice Cavitation and Noise Analysis[J]. Journal of Shanghai Jiaotong University, 2018
, 52(3)
: 297
-304
.
DOI: 10.16183/j.cnki.jsjtu.2018.03.007
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