caa a22 4500 388067969 CHVBK 20180307125138.0 cr unu---uuuuu 161130e199912 xx s 000 0 eng 10.1017/S1727719100000423 doi S1727719100000423 pii (NATIONALLICENCE)cambridge-10.1017/S1727719100000423 Some Nonlinear Features of the Squeeze-Film Problem [Elektronische Daten] The nonlinear features of the squeeze-film problem between two parallel long strips driven by the relative harmonic oscillation of the strips is studied via the regular perturbation and numerical calculation for ∈ < 1 and σ = O(1)- O(103), where ∈ is the dimensionless amplitude of the oscillation, and σ is the squeeze number. The fluid film behaves as a (nonlinear) spring for large σ and as a (nonlinear) damper for small σ, which are qualitatively similar to the linear analysis. However, a steady state force is generated even though the driving mechanism is purely oscillatory due to the nonlinear effect. Furthermore, the dimensionless quasi-steady rate of energy dissipation within one cycle of the plate oscillation, E, is not zero (zero for linear analysis), and is maximized at σ ≈ 10. Also the rate of increase of E with ∈ is greater than ∈2. The present study may be helpful for the design of some accelerometers and vibration absorbers. Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 1999 Squeeze-film nationallicence Nonlinear effects nationallicence Force nationallicence Dissipated energy nationallicence Lei U. Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10617, R.O.C. Chen Chia-Han Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10617, R.O.C. Journal of Mechanics Cambridge University Press 15/4(1999-12), 137-147 1727-7191 15:4<137 1999 15 JOM https://doi.org/10.1017/S1727719100000423 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1727719100000423 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lei U. Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10617, R.O.C NATIONALLICENCE 700 1- Chen Chia-Han Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10617, R.O.C NATIONALLICENCE 773 0- Journal of Mechanics Cambridge University Press 15/4(1999-12), 137-147 1727-7191 15:4<137 1999 15 JOM CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge