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Unformatted text preview: odd n = odd 1 σ( Ω)2 (mn)2 (m2 + n2 c 2 )2 + π4 where: C(Ω) = frequency-dependent damping coefficient KS(Ω) = squeeze stiffness coefficient, po = ambient pressure A = surface area c = ratio of plate length a divided by plate width b d = film thickness Ω = response frequency σ = squeeze number of the system The squeeze number is given by: σ(Ω) = 12ηeff a2 po d2 for rectangular plates where ηeff is the effective viscosity. Results Comparison Target ANSYS Ratio Stiffness, K (Ns/m) 28650.00 28549.65 0.996 Damping constant, C (N/m) 0.0153 0.0151 0.988 1–576 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM246: Cyclic Analysis of an End-Loaded Hollow Cylindrical Cantilever Beam Overview Reference: F. P. Beer, E. R. Johnston, Jr., Mechanics of Materials, McGrawHill, Inc., New York, NY, 1981, pg 598. Analysis Type(s): Static-structural analysis Element Type(s): 3-D 8-Node Structural Solid (SOLID185) 3-D 20-Node Structural Solid (SOLID186) 3-D 10-Node Tetrahedral Structural Solid (SOLID187) Input Listing: vm246.dat Test Case...
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