Modify your axisymmetric model of a thick walled cylinder subjected to an internal pressure so that the
Question:
Modify your axisymmetric model of a thick walled cylinder subjected to an internal pressure so that the cylinder has an inner radius of 110 mm and an outer radius of 320 mm. The length of the model should be 400 mm. Ensure that you mesh this geometry with a 10 by 10 mesh of quadratic elements which use full, rather than reduced, integration. Specify a boundary condition on one end of the cylinder to enforce axial symmetry. The elastic material model should specify a Young's modulus of 200 kN/mm2 and a Poisson's ratio of 0.3. Specify a perfectly plastic material model with a yield stress of 315 N/mm2.
Apply an autofrettage pressure of 128 N/mm2 and then, a final working pressure of 64 N/mm2 to the model. Using an appropriate probe,determine the circumferential stress, on the outer dia of the cylinder,at the working pressure,on the plane of symmetry Give your answer in N/mm2.