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Numerical and experimental approach on energy dissipation in nano colloidal damper

Ku, T.W.    (Department of Aerospace Engineering, Pusan National University   ); Jeon, S.B.    (Samsung Heavy Industry   ); Bui, V.H.    (Department of Aerospace Engineering, Pusan National University   ); Song, W.J.    (Industrial Liaison Innovation Cluster, Pusan National University   ); Park, M.S.    (Defense R&D Center, S&T Daewoo   ); Kang, B.S.    (Department of Aerospace Engineering, Pusan National University  );
  • 초록

    Mechanical damping systems have been widely used to various mechanical structures and systems, and are mainly hydraulic and pneumatic devices nowadays. New damping system such as nano colloidal damper (NCD) is complementary to the hydraulic one, having a cylinder-piston-orifice structure. This study includes numerical and experimental investigation about energy dissipation of NCD by using porous silica particles. In numerical approach, the dissipated energy was obtained between compression and relaxation processes for porous silica particle in NCD according to the capillary tube theory. Furthermore, for colloidal damper, the hydraulic oil was replaced by a colloidal suspension that was consisted of a nano-porous matrix with controlled architecture and a lyophobic fluid. NCD test rig and the measuring technique of the hysteresis were described in this study. Performance of the energy dissipation between numerical and experimental results was investigated and compared. As a result, the proposed NCD was proved to efficiently dissipate the mechanical energy.


  • 주제어

    Energy dissipation system .   Colloidal suspension .   Porous particle .   Nano colloidal damper.  

  • 참고문헌 (6)

    1. V.A. Eroshenko and A.Y. Fadeev, Intrusion and extrusion of water in hydrophobized porous silica, Colloid J. 57 (1995) 480-483 
    2. T. Iwatsubo and C.V. Suciu, Investigation of a colloidal damper, J. Colloid and Interface Sci. 259 (2003) 62-80 
    3. T. Iwatsubo and C.V. Suciu, Investigation of the hysteresis of a colloidal damper, Proc. APVC-2001. 2 (2002) 407-411 
    4. R. Defay and I. Prigogine, Surface Tension and Absorption, Wiley, New-York, (1966) 
    5. T.T. Soong and G.F. Dargush, Passive Energy Dissipation System in Structural Engineering, State University of New York at Buffalo, (1996) 
    6. A.Y. Fadeev and V.A. Eroshenko, Study on penetration of water into hydrophobized porous silicas, J. Colloid and Interface Sci. 187 (1997) 275-282 

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