Theoretical and Experimental Investigation of Molecular Spring Isolator

Abstract:

A molecular spring isolator which consists of water and hydrophobic zeolites as working medium is investigated. When the isolator undergoes periodic excitation, water intrudes into hydrophobic pores of zeolites depending on the external pressure and extrudes from the pores as hydraulic pressure decreases. As a result, molecular spring absorbs, releases and dissipates mechanism energy. To obtain the stiffness properties of molecular spring isolator, the mechanics modal of water column intruding into a hydrophobic pore is established utilizing force equilibrium. Subsequently, the process of water infiltrating large numbers of hydrophobic pores is explored. Then the quasi-static experiment is carried out to validate the theoretical modal. It is found that the molecular spring exhibits high static and low dynamic stiffness. Finally, the effect of quantity of zeolites and temperature on stiffness of molecular spring is investigated experimentally.

• Periodical: Applied Mechanics and Materials (Volumes 764-765)
• Pages: 388-392
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.764-765.388
• Online since: May 2015
• Authors: Mu Chun Yu, Qian Chen*, Xue Gao
• Keywords: Hydrophobic Zeolites, Molecular Spring, Piecewise Stiffness, Vibration Isolation

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