FEM simulation research of axial displacement for expanded solid expandable tubular

The purpose of this paper is to research the laws of axial displacement for expanded solid expandable tubular.A 3-D non-linear FEM contact analyses model of Solid Expandable Tubular(SET) was established. The result solved by this model is consistent with that measured in the test, which proved the model advanced is dependable and accurate. The relationship between axial displacement of expanded SET and the expansion tool’s model angle was studied carefully through solving the model with FEM analyses software Ansys and the relationships between axial displacement of expanded SET and friction coefficient, expansion rate, and thickness of the tubular were curved distinctly. As the conclusion that axial displacement of expanded SET is affected by various parameters, the working condition, technical parameters and expansion tool’s model angle must be considered in designing the suitable expansion plan.