HYBRID FINITE-ELEMENT - BOUNDARY ELEMENT SIMULATION OF ROTATING MACHINERY SUPPORTED ON FLEXIBLE FOUNDATION AND SOIL Academic Article

abstract

• Relative and absolute shaft vibration data have revealed that the commonly made assumption of rigidly supported bearings may be grossly inaccurate, especially for fans, generator sets, and natural gas transmission compressors. This paper provides a systematic method for modeling flexibly mounted rotating machinery utilizing 8 node isoparametric brick-type finite elements for the foundation and 4 node isoparametric patch type boundary elements for the soil. The rotor is modeled utilizing Euler-Bernoulli beam elements and includes disk gyroscopics and cross coupled bearing coefficients. The large number of degrees of freedom included in the model are reduced utilizing a nested superelement scheme and Guyan reduction.

authors

• Palazzolo, Alan

published proceedings

• JOURNAL OF VIBRATION ACOUSTICS STRESS AND RELIABILITY IN DESIGN-TRANSACTIONS OF THE ASME

author list (cited authors)

• EARLES, L. L., PALAZZOLO, A. B., LEE, C. K., & GERHOLD, C. H.

citation count

• 7

complete list of authors

• EARLES, LL||PALAZZOLO, AB||LEE, CK||GERHOLD, CH

publication date

• July 1988

publisher

• ASME International  Publisher

published in

• Journal of Vibration and Acoustics  Journal

Digital Object Identifier (DOI)

• 10.1115/1.3269517

start page

• 300

end page

• 306

volume

• 110

issue

• 3

URL

• http://dx.doi.org/10.1115/1.3269517