by Maria Vathi
Diploma Thesis, July 2008
A significant number of large-diameter-thickness pipes used in offshore applications are commonly manufactured by cold-forming plates through the UOE process. This process consists of four sequential forming steps. In this study the UOE forming process has been modeled numerically. The simulation is achieved through the application of a non-linear Finite Element code and focuses on the effect of the applied expansion to the geometrical characteristics of the formed pipe as well as on the evaluation of the residual stresses field.