Hi Guys, I 'm currently trying to make a 2D model of a sector of a compressor disk with the blade attached to it by means of a frictional contact (as shown in the attached pic). The contact between the blade and disk is frictional (coeff=0.25), augmented lagrange formulation, and adjust to touch interface treatment. I subjected all bodies to rotational velocity of 1000rpm and the boundary conditions are friction-less supports at the bottom of the disk and at its two sides (which would represent the symmetry condition during operation of the full disc). I need to determine the equivalent von-mieses stress on the disk, just below the contact point of the blade and the disc. Now, my problem is that when I tried to do a mesh convergence test, von-mieses stress value at the point of interest does not reach a stable value as I refine the mesh. The error percentage from the previous mesh refinement run doesn't keep reducing. I'd be really grateful if anyone could help me around this.