Features Analysis On A Vibration System Of Novel Structural MR Fluid Absorber

The main objective of this thesis is the electro-hydraulic vibration system which is used to test the characteristics performance of the new type structure magneto-rheological fluid (MRF) absorber. It is a device for vibration test that can produce sinusoidal excitation to the test device.At present, the shock absorber damping effect is not ideal in the magneto-rheological shock absorber dynamic loading experiments, especially between 2Hz and 8Hz. The preliminary analysis reason is that the natural frequency of loaded system falls on the natural frequencies of vibration frequency region, thus giving rise to the system resonance. In order to carry out better the dynamic characteristics analysis of the shock absorber, the structure of the vibration table should be transformed.According to the transformation program, the specific measure is to reinforce vibration table above stiffness, and then dynamic load experiment is tested on the improved vibration table for proving the feasibility of the modification measures. The natural frequency of modified vibration is significantly improved, with better dynamic characteristics to meet the requirements of the experiment.Finally, in order to create a better experimental conditions, the structure of the electro-hydraulic vibration table is also studied for the structural optimization, in this paper, which of the vibration table is studied by the optimization design module of the software ANSYS. In addition, the optimal values of cross-section parameters of main component are calculated for avoiding the resonance region, which is the theoretical base for further experimental study.In short, the vibration system modal analysis is the basic method evaluating dynamic performance of the system, the system modal analysis results provide the objective basis for the structural transformation; the structural optimization offers a powerful tool and method of implementation through advanced methods and analysis for the design of economic, high performance vibration and stability of units.