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| Mechanical properties of molecular spring vibration isolator based on metal organic skeleton material |
| JIN Yang, CHEN Weidong, CHEN Qian, TENG Handong |
| State Key Lab of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract The mixture of metal organic framework material and water was placed in a closed container as the working medium to form molecular spring isolator based on metal organic framework material. When the isolator is subjected to external load, water invades and escapes from the hydrophobic micropores of the metal-organic framework material under external pressure, realizing the storage and release of energy. The process of water molecules invading micropores of metal-organic framework material was simulated by the relationship between micromechanical equilibrium and macroscopic volume change. The force displacement relationship of vibration isolator was deduced during the loading process. The mechanical model was verified by quasi-static test, The influence factors of the performance of the isolator were analyzed by simulation and experiment. The results show that the theoretical and experimental results are in good agreement, and the molecular spring isolator based on metal-organic framework material shows the characteristics of high-low-high segmental stiffness, The minimum contact angle, maximum pore diameter, cobalt ratio and pore volume of the metal organic framework material will have an impact on the stage II of the vibration isolator. Adjusting these parameters can flexibly adjust the performance of the vibration isolator.
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Received: 25 August 2022
Published: 15 July 2023
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