Effects of Gas Inertia Forces on Dynamic Characteristics of Externally Pressurized Gas-Lubricated Thrust Bearings : Evaluation of Various Approximate Solutions under Highly Unsteady Conditions
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In this report, the modified averaging approach to the solution for the dynamic performance of an externally pressurized, gas-lubricated, circular thrust bearing in a laminar flow regime, is presented under the assumption of a small harmonic vibration. This approach can evaluate the inertia effects under highly unsteady conditions. The accuracy of the approximate solutions presented in a previous report are compared and evaluated under similar conditions and the following conclusions are obtained: (1) The conventional averaging approach, in which all the inertia terms are averaged out across the film thickness, gives a good approximation. (2) The first-order solution of the perturbation method becomes remarkably inaccurate as the unsteadiness becomes high.
雑誌名
JSME international journal. Series C, Mechanical systems, machine elements and manufacturing
Effects of Gas Inertia Forces on Dynamic Characteristics of Externally Pressurized Gas-Lubricated Thrust Bearings : Evaluation of Various Approximate Solutions under Highly Unsteady Conditions
JSMEC89-303.pdf
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