Abstract
Methods to thoroughly and efficiently analyze a composite riser designed for use in offshore drilling applications and subjected to various types of loading have been developed. An axisymmetric finite element model allowing nonaxisymmetric deformations has been constructed. 'the model was simplified by exploiting symmetries in the lay-up of the composite to homogenize material properties. Postprocessing techniques to recover ply level stresses and strains and determine lamina failures were also developed. The analysis is demonstrated on an industry-designed riser, and the results show that the current design is unacceptable. Even at normal operating loads, there is some failure and some very high stress levels. The analysis is used to suggest modifications to the baseline design.
Sundstrom, Keith Andrew (1996). Stress analysis of a hybrid composite drilling riser. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1996 -THESIS -S87.