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Dan Lin

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Proceedings Article | 1 April 2024 Paper

Experimental and simulation study on dynamic stiffness characteristics of spring oscillator isolator model

Xiaomeng Qin, Haowen Mou, Dan Lin

Proceedings Volume 13082, 130822P (2024) https://doi.org/10.1117/12.3026469

KEYWORDS: Oscillators, Vibration, Elasticity, Testing and analysis, Analytical research, Performance modeling

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The dynamic stiffness and impact stiffness of isolators are the core technical indicators for the performance evaluation of isolators. Accurate assessment is necessary to meet the needs of different usage environments. The main methods for testing dynamic stiffness include the ellipse method, vibration excitation method, and self-excited oscillation method. The main techniques for testing impact stiffness are the drop method and the drop hammer method. Choosing the appropriate testing method based on the characteristics of the test piece can greatly improve efficiency. This paper employs the vibration excitation method to conduct dynamic stiffness simulation and experimental analysis on the spring oscillator isolator model, and uses the drop method for impact stiffness simulation and experimental analysis of the same model. Based on a comparison of simulation analysis and experimental analysis, the effectiveness of the tests was clarified. Moreover, the advantages and disadvantages of various testing methods for dynamic and impact stiffness were sorted out based on the relevant experimental data, to serve as a reference for related testing technicians.

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