Case Studies
Houston, TX - December 2000
Stress Model:
Exmar-2500 Semi-Submersible Deep Water Drilling Platform
View
the 7-second AVI movie (6.88 MB)
This animated plot represents Exmar's design of the semi-submersible
platform "Exmar-2500" for deep water drilling. The Original model used
the SACS finite element package by Engineering Dynamics, Inc. (EDI.)
The animation shows simultaneously three effects on the platform:
- Rigid body motion due to an extreme wave (wave height = 56 ft) coming
from a 45 degree angle.
- Linear deformation on the model (amplified 75 times) resulting from
the wave and inertial loading.
- Principal stress color contour due to the same wave and inertial
loading.
Using the Tecplot macro capability, the animation uses real and imaginary
components of the wave and inertial loading to generate the deformation
on the model and stress fields for the color contours as the wave passes
through the semi -submersible.
The animation helps to visualise the relationship between the deformation
and stress distribution during the wave passage. These results are combined
to other wave headings and frequencies to assess the structure integrity
on extreme events and on fatigue failure modes. |
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