0

Full Content is available to subscribers

Subscribe/Learn More  >

Reliability-Based Assessment of Vibrations on an Offshore Living-Quarters Platform in Mexico

[+] Author Affiliations
David de Leon

Instituto Mexicano del Petróleo, Mexico City, Mexico

Paper No. OMAE2002-28042, pp. 49-54; 6 pages
doi:10.1115/OMAE2002-28042
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3612-6 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

Structural safety, integrity and reliability of offshore marine platforms under extreme loading is generally a widely studied topic [2, 4, 9]. However, ordinary environmental forces on particularly flexible components may be important sources of dynamic excitation and significant vibrations. For those cases where the structural system of the superstructure is totally different of the one used for the substructure, the non-uniform vertical distribution of the stiffness may impact the dynamic response by adding significant amplifications on the resulting motions of the more flexible structure. Significant motions were reported on a Mexican living-quarters platform. The platform was monitored and its dynamic characteristics were identified in order to prevent excessive displacements and accelerations. The platform was modeled as a single degree of freedom system with elasto-plastic behavior and the dynamic properties were calibrated from records obtained throughout a monitoring campaign of response displacements and accelerations on the platform. Fourier amplitude response spectra were generated and the fundamental period and damping percent were estimated. On the basis of Monte Carlo simulation of time history accelerations, the probability to exceed prescribed thresholds for lateral displacements, accelerations and lateral strength under several given wave heights were estimated. As these probabilities are conditional to the occurrence of the wave height exciting the platform, the unconditional probabilities were obtained by convolving the conditional probabilities over the probability of occurrence of the wave heights prescribed for the site of the platform.

Copyright © 2002 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In