No abstract

No abstract

The work presented in this paper was carried out as part of a Joint Industry Program to qualify composite tubes for use as TLP production/injection risers. The program included the study of the influence of different kinds of damage on tube performance and fatigue life, the assessment of NDT methods for detecting damage and its evolution, as well as ways of predicting the ultimate performance of severely fatigue tested tubes. The following oil companies supported the program: Agip, Chevron, Conoco, Elf Aquitaine, Shell IPM, Statoi!. BACKGROUND Composite TLP Risers

The authors have studied the deformations of a mandible isolated from its muscular environment and submitted to statical constraints, with the help of a "modified model" and the finite elements method: the general deformation of the mandible and its modifications according to the direction of the application of the pressure, the rotation phenomenon or "torsion" in cross sections (identified by computer) of the mandible, the respective deformations of the internal and external corticals have successively been calculated. Particular mechanical phenomenons corresponding to the areas where the anatomo-clinical forms of the mandibular fractures take place have clearly been shown. The authors draw the conclusion that the mandible behaves mechanically in a similar way to a tridimensional composite.

No abstract