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http://dx.doi.org/10.5000/EESK.2003.7.6.093

Modeling and Theoretical Analysis of Thermodynamic Characteristic of Nano Vibration Absorber  

문병영 (밀양대학교 기계공학과)
정성원 (밀양대학교 기계공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.6, 2003 , pp. 93-99 More about this Journal
Abstract
In this study, new shock absorbing system is proposed by using nano-technology based on the theoretical analysis. The new shock absorbing system is complementary to the hydraulic damper, having a cylinder-piston-orifice construction. Particularly for new shock absorbing system, the hydraulic oil is replaced by a colloidal suspension, which is composed of a porous matrix and a lyophobic fluid. The matrix of the suspension is consisted of porous micro-grains with a special architecture: they present nano-pores serially connected to micro-cavities. Until now, only experimentally qualitative studies of new shock absorbing system have been performed, but the mechanism of energy dissipation has not been clarified. This paper presents a modeling and theoretical analysis of the new shock absorbing system thermodynamics, nono-flows and energy dissipation. Compared with hydraulic system, the new shock absorbing system behaves more efficiently, which absorb a large amount of mechanical energy, without heating. The theoretical computations agree reasonably well with the experimental results. As a result. the proposed new shock absorbing system was proved to be an effective one, which can replace with the conventional one.
Keywords
vibration suspension; energy dissipate; surface force; nano-flows; fluid dynamics; nano-technology; dynamics;
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