Dynamic response of flexible rotating machines subjected to ground motions Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/vt150n30z

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  • Rotating machine play an important role in modern technology. Compressors in ventilating and cooling systems, pumps in power generation facilities, as well as high speed computer are all examples of flexible rotating machinery that must remain functional during and after a sever earthquake. Recent earthquakes have demonstrated that an aseismically designed structure may perform well during a strong earthquake yet still become nonfunctional due to damage in critical nonstructural components. For example, evacuation of several hospitals during the recent Northridge earthquake in the LA area was not caused by structural failure bur resulted from mechanical failure of the systems described above. Rotating machines are key components of such system. Further study into the behavior of these systems and technique for their protection for their protection during severe ground motion is needed. The flexible rotating machine is significantly complex, even for highly simplified models, due to gyroscopic and other effects. This paper presents the coupled, linear partial differential equations of motion of a flexible rotating shaft subjected to ground motion. Classical and finite element methods are developed to solve these equations. The effects of various physical parameters on the response of the system; magnitude, duration, and frequency content of the ground motion; bearing stiffness and damping; flexibility of the deformation and rotatory inertia effects are investigated, Both vertical and horizontal ground motion, individually and in combination, will be considered.
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  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2012-12-07T21:02:23Z No. of bitstreams: 1 SuWen-Chyi1995.pdf: 2038262 bytes, checksum: dd7251b20501167e0ecf218de6ea25c3 (MD5)
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  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2012-11-28T01:24:12Z No. of bitstreams: 1 SuWen-Chyi1995.pdf: 2031004 bytes, checksum: a4e4d44a1f65c8188954f1a221929369 (MD5)
  • description.provenance : Made available in DSpace on 2012-12-10T18:34:37Z (GMT). No. of bitstreams: 1 SuWen-Chyi1995.pdf: 2038262 bytes, checksum: dd7251b20501167e0ecf218de6ea25c3 (MD5) Previous issue date: 1994-11-30
  • description.provenance : Rejected by Patricia Black(patricia.black@oregonstate.edu), reason: Rotate charts on 2012-11-28T17:28:56Z (GMT)
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