Full Content is available to subscribers

Subscribe/Learn More  >

Optimization of Mega-Frame Platforms Based on Orthogonal Design

[+] Author Affiliations
Dong Zhao, Rijian Ma, Shaoli Cai, Dongmei Cai

University of Jinan, Jinan, Shandong, China

Paper No. OMAE2008-57091, pp. 711-716; 6 pages
  • ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 3: Pipeline and Riser Technology; Ocean Space Utilization
  • Estoril, Portugal, June 15–20, 2008
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4820-3 | eISBN: 0-7918-3821-8
  • Copyright © 2008 by ASME


The orthogonal design was chosen as the mega-frame platform optimizing method to find out the parameters which had the most important effect on the platforms’ performances. The mega-frame platform (MFP) was a new type of anti-vibration platform using the mega-frame theory. It was combined of the major frame and the minor frames. The parameters that had much more important effect on the MFP’ static capability were the number, height, position and stiffness of the major beams and the leg batter, stiffness of the major columns. In this paper, there were six factors, which were the diameter of the major beams (factor A), the leg batter (factor B), the diameter of the major columns (factor C), the position (factor D), the number (factor E) and height (factor F) of the major beams, in the orthogonal design. Two factors, the number and the height of the major beams, had two levels. One factor, the position of the major beams, had three levels. The other three factors had four levels. In order to use the orthogonal table L16 (44 ×23 ), one level of factor D was repeated. The analyses of the MFPs with different parameters under the same horizontal and vertical unequal loads show that: 1) the most important factor that effects the MFP is the diameter of the major columns, then the leg batter of the major columns; the thirdly and the fourthly factor are the position and the diameter the major beams; the height of the major beam has the least effect on the MFP’s performances; 2) the optimal MFP is C4 B3 D4 A1 E2 F2 . The mode analysis of the optimal MFP shows that the platform has high global stiffness and the equal mass and stiffness distribution. So the MFPs have the overall performance and can avoid the partial breakage under the random external loads.

Copyright © 2008 by ASME



Interactive Graphics


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

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