A magneto-rheological bearing (MRB) is proposed to improve the vibration isolation performance of a floating slab track
system. However, it’s difficult to carry out the test for the full-scale track vibration isolation system in the laboratory. In
this paper, the research is based on scale analysis of the floating slab track system, from the point view of the
dimensionless of the dynamic characteristics of physical quantity, to establish a small scale test bench system for the
MRBs. A small scale MRB with squeeze mode using magneto-rheological grease is designed and its performance is
tested. The major parameters of a small scale test bench are obtained according to the similarity theory. The force
transmissibility ratio and the relative acceleration transmissibility ratio are selected as evaluation index of system
similarity. Dynamics of these two similarity systems are calculated by MATLAB experiment. Simulation results show
that the dynamics of the prototype and scale models have good similarity. Further, a test bench is built according to the
small-scale model parameter analysis. The experiment shows that the bench testing results are consistency with that of
theoretical model in evaluating the vibration force and acceleration. Therefore, the small-scale study of
magneto-rheological track vibration isolation system based on similarity theory reveals the isolation performance of a
real slab track prototype system.
Rui Li, Wenjun Mu, Luyang Zhang, and Xiaojie Wang, "A small-scale study of magneto-rheological track vibration isolation system," Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98033B (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 24, 2016; Published: 20 April 2016); https://doi.org/10.1117/12.2218841.
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