Due to the effects of the CSI, the control accuracy of shaking table and the accuracy of the response of load decrease to a great extent under some conditions 14, 15, 16. In the context of shaking table test, the control-structure interaction (CSI) 11, 12, 13 is the dynamic coupling between shaking table and load (that is the test structure model) (Fig. And the visualization expression of the effect assessment is obtained for convenient application.Įlectro-hydraulic shaking table is one of the most important pieces of equipment for replicating actual vibration conditions in various applications, including biomedical and geological researches 1, 2, 3, engineering seismic research works 4, 5, 6, aerospace vibration tests 7, 8, and vehicle road simulations 9, 10, etc. Furthermore, a novelty effect assessment is proposed to appraise whether the CSI effects can be ignored in shaking table test. Through the analysis, the role of the ER is identified, the sensitivities of the MR, IR, and ER to the transfer function matrix are revealed, and the CSI effects are found.
The analysis is conducted under such conditions as different mass ratio (MR), moment of inertia ratio (IR), and eccentric distance ratio (ER) conditions. To overcome those theoretical bottlenecks, in this research, an analytical transfer function matrix of shaking table and eccentric load is established to analyze the CSI effects. And an effect assessment is yet to be proposed to evaluate the CSI effects, which has impeded the development of test technology. At present, the research gap of the influence of the eccentricity of load on the CSI makes it challenging to find the CSI effects. The control-structure interaction (CSI) between shaking table and eccentric load has lately received considerable attention for causing the accuracy degradation of shaking table test. Electro-hydraulic shaking table is an essential experimental apparatus to evaluate structural performance under actual vibration condition.
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