Learning Forum

[Aslinn]

Hi, I'm trying to apply force to one object through another object over a small area using solid elements. I was hoping that stress singularity does not occur since I'm using solid elements rathan than a point load, but I still have super high stress at the point of loading. I think I am using the wrong contact setting because I have pene-tra-tion between the two objects, as shown below. Could someone please advise how to model this interface correctly to avoid stress singularity? Thank you!

[1shan]

,nA small amount of penetrtion is acceptable for most of the problems and is a unavoidable consequence of the augmented lagrange formulation which enables ease of convergence. As far as the singularity is concerned, will the stress concentration at the edges have a significant effect on the results, in the area of interest? If no, you could simply ignore them. If yes then you could give a small fillet radius at the edges and apply a mesh bias with more elements near the edges.nRegards,nIshan.n

[Aslinn]

Thank you for your reply. That makes sense. Yes I checked other points away from the loading point and they are all fine.n