Offshore Technology Research Center (OTRC) - Texas, USA


The University of Texas at Austin, USA
Texas A&M University, USA


The research aimed at investigating the structural capacity of underwater steel pipelines against buckling. A nonlinear finite element technique is developed (source code) for the nonlinear analysis of pipe segments under bending, pressure and axial load.

Principal Investigator:

Prof. John L. Tassoulas, The University of Texas at Austin


Spyros A. Karamanos, Graduate Research Assistant


48 months (1988 - 1992)


Figure B1 1

Figure 1: S-lay barge.

Figure B1 2
Figure 2: S-lay procedure (1)

Figure B1 3
Figure 3: S-lay procedure (2)

Figure B1 4
Figure 4: Riser installation.

Figure B1 5
Figure 5: pipe buckling under external pressure.

Figure B1 6
Figure 6: pipe buckling under bending.

Spyros A. Karamanos, PhD

Department of Mechanical Engineering | University of Thessaly | Pedion Areos, Volos 38334, Greece
Phone: +30 - 24210 74086, 74360 | Fax : +30 - 24210 74360 | Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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