Abstract
A molecular spring isolator consisting of water, hydrophobic zeolites and a cylinder-piston container is introduced in this paper. When the molecular spring isolator undergoes periodic excitation, water molecules will intrude into hydrophobic pores of zeolites as hydraulic pressure reaches a critical level. And water molecules extrude from the hydrophobic pores as the pressure decreases. As a result, mechanical energy is stored, released and partially dissipated with the hydraulic pressure changing periodically. The stiffness model of molecular spring is established by two steps. Firstly, the mechanics model of water column intruding into a hydrophobic pore was established utilizing force equilibrium. After that, the process of water infiltrating a large number of hydrophobic pores was investigated. As a result, the stiffness of molecular spring isolator is piecewise nonlinear. Furthermore, a quasi-static experiment was conducted to verify the mechanics model and the effect of quantity of zeolites and temperature on molecular spring isolator was tested. Finally, the vibration isolation property is assessed by energy transmissibility.
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References
Desbiens N, Boutin A, Demachy I (2005) Water condensation in hydrophobic silicalite-1 zeolite: a molecular simulation study. J Phys Chem 109:24071–24076
Eroshenko V, Regis R, Soulard M et al (2001) Energetic: a new field of application of hydrophobic zeolites. J Am Chem Soc 123:8129–8130
Fadeev A, Eroshenko V (1997) Study of penetration of water into hydrophobized porous silicas. J Colloid Interface Sci 187:275–282
Gao X, Chen Q, Teng HD (2011) Dynamics properties of corrugated-pipe type SALiM vibration isolator. Chin J Theor Appl Mech 43:1162–1169
Gao X, Chen Q, Teng HD (2012) Molding and dynamics properties of a novel solid and liquid mixture vibration isolator. J Sound Vib 331:3695–3709
Liu QJ, Chen T, Chen SC et al (2009) Approximately function of gauss distribution integral and its application in estimating experimental results. Adv Meas Lab Manag 3:21–23
Soulard M, Patarin J, Eroshenko V (2004) Molecular spring or bumper: a new application for hydrophobic zeolites materials. Stud Surf Sci Catal 154:1830–1837
Suciu C, Iwatsubo T (2001) Investigation of a colloidal damper. J Colloidal and Interface Sci 259:62–80
Suciu C, Iwatsubo T, Deki S (2003) Investigation of a colloidal damper. J Colloid Interface Sci 259:62–80
Teng HD, Chen Q (2009) Vibration isolation properties of solid and liquid mixture. J Vib Eng 22:256–261
Trzpit M, Rigolet S, Paillaud J (2008) Pure silica chabazite molecular spring: a structural study on water intrusion–extrusion processes. J Phys Chem 112:7257–7266
Tzanis L, Trzpit M, Soulard M et al (2011) High pressure water intrusion investigation of pure silica 1D channel AFI, MTW and TON-type zeolites. Microporous Mesoporous Mater 146:119–126
Tzanis L, Trzpit M, Soulard M et al (2012) Energetic performances of channel and cage-type zeosils. J Phys Chem 116:20389–20395
Zhang FT (2006) Fundamentals of Molecular Interface Chemistry. Shanghai Scientific and Technological Literature, Shanghai
Acknowledgments
This work was supported by National Natural Science Foundation of China under Grant No. 11272145, Funding of Jiangsu Innovation program for Graduate Students under Grant No. CXLX13_134, the Fundamental Research Funds for the Central Universities and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Yu, M., Chen, Q. & Gao, X. Theoretical and experimental investigation of molecular spring isolator. Microsyst Technol 23, 285–292 (2017). https://doi.org/10.1007/s00542-014-2401-7
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DOI: https://doi.org/10.1007/s00542-014-2401-7