Abstract
This study addresses the modified bionic vibration isolation technology by introducing the electromagnetic system to simulate biological damping characteristics. It has been proven effective in improving the vibration environment. By assuming the spacecraft-adapter system as a two-degree-of-freedom system, an excellent simplified model can be derived. The novel bionic vibration isolation device (ABVS-EMVI), which combines an active bionic variable-stiffness device (ABVSVI) with the electromagnetic system, is proposed for the purpose of isolating vibration and harvesting energy at the same time. The dynamic equations of the spacecraft-adapter system with ABVS-EMVI are obtained using the Taylor expansion within the framework of the Lagrange equation, and the harmonic balance method is introduced to acquire the amplitude and voltage response of the system. The results indicate that the electromagnetic system can enhance the vibration isolation performance and provide energy harvesting capabilities. After confirming the ability of ABVS-EMVI to deal with different forms and amplitudes of excitation, the performance of vibration isolation and energy harvesting is investigated in terms of various parameters, and several new conclusions have been drawn.
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This project is supported by the National Natural Science Foundation of China (Grant Nos. 12022213, 12002329, and 12272240).
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Chai, Z., Song, X., Zang, J. et al. Nonlinear Vibration Isolation of Spacecraft System by a Bionic Variable-Stiffness Device Enhanced by Electromagnetic Component. Acta Mech. Solida Sin. 36, 921–932 (2023). https://doi.org/10.1007/s10338-023-00431-x
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DOI: https://doi.org/10.1007/s10338-023-00431-x