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Dynamic investigation and optimal design of a novel fluid coupling shock absorber for dual demand of vibration and impact safety of precision systems

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Summary

The aim of this article is to provide a systematic investigation to the design or optimal design of the shock absorber for the protection of a precision system as electronic packaging system in harsh vibration-impact environment. To get the dual demand of resisting violent impact and attenuating vibration in vibration-impact-safety for precision equipment or components, a novel micro fluid coupling damping shock absorber is designed and manufactured through coupling the oil, rubber ball and spring by ingenious tactics. The physical mechanism of the actual shock absorber is systematically investigated. The experimental results of the key-model machine in dynamic tests show complex nonlinear dynamic characteristics. Based on the test, the nonlinear dynamic model for the shock absorber is presented by analyzing the internal fluid dynamic phenomenon with respect to the shock absorber. Comparisons with experimental data confirm the validity of the model. The model is integrated by introducing normalization measure in progress. The approximate formulae are deduced by introducing some transformation tactics. These approximate theoretical formulae include the output response of the system, absolute acceleration transmissibility in vibration or impact, and the maximum relative displacement in impact process etc. So the optimal model for parameters matching the design is built. The parameters matching the design are discussed based on an approximate solution in progress. Finally, an example of the applied product is described.

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Ping, Y. Dynamic investigation and optimal design of a novel fluid coupling shock absorber for dual demand of vibration and impact safety of precision systems. Acta Mechanica 190, 205–222 (2007). https://doi.org/10.1007/s00707-006-0433-5

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  • DOI: https://doi.org/10.1007/s00707-006-0433-5

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