This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Test Method, Simulation and Micro-process Dynamic Model for Noise Analysis of Auto Hydraulic Shock Absorber
Technical Paper
2015-01-2351
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In order to measure the noise of auto shock absorbers, a test bench used to detect piston-rod vibration responses of shock absorbers and measuring analyzer named SANTS-I were developed. The vibration response data was detected by bench tests, which shows that there are high-frequency violent peaks on the sine curve of piston-rod oscillating with relative low frequency. In order to explain the interior work dynamic mechanism of shock absorbers, a schematic Micro-process Dynamic Model with 10 steps particularly divided extension and compression stroke in more detail, and dynamic differential equations for each step were presented and discussed. Furthermore, numerical simulation for the inner impacts interaction between piston and damping fluid of hydraulic shock absorber was realized by ADINA software, by the establishment of a gas-liquid two-phase finite element model. It was understood by the Micro-process Dynamic Model and numerical simulation that the cause of the abnormal noise is violent vibrations excited by inner clearance impact interaction between piston and damping oil fluid. And adherence action between valve plate and its seat, friction between piston and cylinder barrel and vaporization of damping oil fluid would intensify the impacts around the piston top dead center (TDC) and bottom dead center (BDC). Therefore, high-frequency vibration of the piston is excited and transferred to body structure of automobile, and the abnormal noise is generated.
Recommended Content
Technical Paper | Knock in S.I. Engines: A Comparison between Different Techniques for Detection and Control |
Technical Paper | Steering Grunt Noise Robustness Improvement |
Journal Article | Probabilistic Reanalysis Using Monte Carlo Simulation |
Authors
Topic
Citation
Shu, H., Luo, S., and Wang, L., "Test Method, Simulation and Micro-process Dynamic Model for Noise Analysis of Auto Hydraulic Shock Absorber," SAE Technical Paper 2015-01-2351, 2015, https://doi.org/10.4271/2015-01-2351.Also In
References
- Da-wei YU , Jin-liang LUO An Analysis on the Cause of Abnormal Sound of Automobile Shock Absorber[J] Journal of Weapon 2000 21 1 19 26
- Choon-Tae Lee , Byung-young Moon Simulation and Experimental Validation of Vehicle Dynamic Characteristics for Displacement-sensitive Shock Absorber Using Fluid-flow Modelling[J] Mechanical Systems and Signal Processing 2006 20 2 373 388
- Swayze , J. , Bachrach , B. , and Ravi Shankar , S. Suspension Force Optimization Using Quarter-Car Model with Elastomeric Elements SAE Technical Paper 1999-01-1753 1999 10.4271/1999-01-1753
- SCHIEHLEN W , HU B Spectral Simulation and Shock Absorber Identification [J] International Journal of Non-Linear Mechanics 2003 38 02 161 171
- Piotr Czop , Sawik , Damian A High-frequency First-principle Model of a Shock Absorber and Servo-hydraulic Tester[J] Mechanical Systems and Signal Processing 2011 25 6 1937 1955
- Sanmantaray A.K. Modeling and Analysis of Preloaded Liquid Spring/damper Shock Absorbers[J] Simulation Modelling Practice and Theory 2009 17 1 309 325
- Michalakoudis I , Thite A.N. Experimental Identification of Shock Absorber Knocking Noise Using Various Input Waveforms[J] Noise Control Engineering Journal 2013 61 1 26 40
- Benaziz , M. , Nacivet , S. , Deak , J. , and Thouverez , F. Double Tube Shock Absorber Model for Noise and Vibration Analysis SAE Int. J. Passeng. Cars - Mech. Syst. 6 2 1177 1185 2013 10.4271/2013-01-1912
- Hong-yu SHU , Li-yong WANG , Yi-wan CEN Abnormal Noise Test Method of Vehicle Hydraulic Shock Absorber[J] Journal of Central South University of Technology 2005 28 4 10 13
- Sheng-xue WANG , Zhu-xin LI , Hong-yu SHU The Study of Abnormal Noise Mechanism of Oil Shock Aborber[J] Machine Tool & Hydraulics 2008 36 11 42 44 66
- Ming-Tao Yao , Ji-Fu Guan , Liang Gu et al. Study on Abnormal Noise of Vehicular Twin-tube Shock Absorber[J] Machinery Design & Manufacture 2011 2 114 116
- Rui Song , Wei-ping Ding , Ming-liang Yang et al. Experimental Research on Abnormal Noise from Suspension Shock Absorber[J] Automobile Technology 2011 7 9 42
- Martins , F. , Siqueira , C. , and Spogis , N. Development and validation of a CFD model to investigate the oil flow in a shock absorber SAE Technical Paper 2005-01-4030 2005 10.4271/2005-01-4030
- Qi-ping Chen , Hong-yu Shu , Wen-qiang Fang et al. Fluid Structure Interaction for Circulation Valve of Hydraulic Shock Absorber [J] Journal of Central South University 2013 20 3 648 654
- Jun-qing ZHANG , Da-feng JIN , Liu-qi ZHAO , Zhi-guo LI A Study of Non-linear Mathematical Model of Double Cylinder Vibration Damper[J] Engineering Mechanism 2002 33 11 16 18
- Zhen-hua LV , Shi-min LI Simulation Techniques for Nonlinear Dynamic Characteristics of Telescopic Hydraulic Dampers[J] Journal of Tsinghua University (Science and Technology) 2002 42 11 1532 1536
- Jian-Yong Liu , Liang Gu Analysis on the Oil Loss Travel Distortion of Dual -tube Shock Absorber [J] Journal of Machine Design and Research 2009 25 5 23 25