ASYMPTOTIC ANALYSIS OF TLP TENDONS AND RISERS

Except for the presence of highly localised bending stresses near the supports, the behaviour of a slender tendon or riser under axial tension is essentially similar to that of a stretched string. From the viewpoint of analysis, however, a tendon or riser is neither a string nor a conventional beam, thus suggesting the exploration of more suitable analytical techniques. The relative significance of the flexural stiffness of such a slender member can be expressed conveniently in terms of two perturbation parameters, one for each end of the member. Closed-form asymptotic formulas are developed to depict, in an explicit and quantitative manner, the extent to which static or dynamic behaviour of a tendon or riser may be affected by localised bending stresses near the supports. These formulas include, in particular, closed-form expressions for distribution of localised bending stresses, effect of rotational springs at the supports, lateral vibration frequencies of tendon or riser, and corresponding mode shapes.

• Supplemental Notes:
  • J Engng Mechanics, v 118 n 1, Jan 1992, p 56 [18 p, 5 ref, 1 tab, 3 fig]
• Authors:
  • Oran, C
• Publication Date: 1992

Language

• English

Subject/Index Terms

• TRT Terms: Bending; Bending stress; Mathematical analysis; Stresses; Tension
• Old TRIS Terms: Risers; Tension leg platforms
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00702233
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM