ANSYS varification manual 9

# The mass is displaced an amount from its equilibrium

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Unformatted text preview: ©¤ p § q ¤ ¤ ¢ ¢ ¤ ¦ s r s r ¥ b ¤ diWh3UT56 4 Q9P aY V B S8 cgGH7!g! fe& 6 BC5@ 8R& ¥ 76!5e2!d0 I &6  D 8 8  &  4   b £ YW V U B S 8 Q ca1`X3T56 4 RP !FH5!F! EC& 6 CA@ 9& ¥ 7!53!10  I G&6 D 88B 8 & 6  4  2  Material Properties ρ = 0.0000934 lb-sec2/in4 k = 10 lb/in β = 30 x 104 psi Geometric Properties a = 7 in b = 8 in Analysis Assumptions and Modeling Notes The problem is solved first using the fluid coupling element (FLUID38) and then using the harmonic fluid element (FLUID81). The total length of the assembly is assumed to be long in comparison with its radius. The solution is based upon radial motion of a unit length of the assembly. The cylinder is assumed to be massless so that all mass effects are from liquid annulus. For the fluid coupling element (FLUID38), the nodes are defined as coincident but are shown apart for clarity. For the harmonic fluid element (FLUID81), the bulk modulus (β) should be characteristic of the fluid since it is used for shear stabi...
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## This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.

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