The highly distorted element error message stops to the solution from proceeding much further than 51% of the way to 8e-2 MPa (11.6 psi). I pulled the flat to the axis so there is no hole in the flat.nI don't know why you have such a thick elbow on the flat. If you resize the dimension on the lower arc of the elbow to 2 mm, then you get a uniform wall thickness and there is no highly distorted element problem.n