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Hi, I have done cylinder buckling analysis and in that I have observed when I give a higher value for the maximum arc length, sometimes after buckling the LPF goes below zero and instead of inward buckle I see an outward buckle(which is not expected). In your case, I believe the beam buckles...

Hi Lukasinski, I think you probably might have figured by now, still I would like to share what I know. I'm also working on the Riks procedure. I usually use 0.05 or 0.1 as initial arc length which means 5% or 10% of the load is applied in the first increment and I keep 0.1 or sometimes 1 as...

Hi guys, I'm analyzing the the buckling of axially compressed cylindrical shells using riks procedure in abaqus. After analysis, when I plot the LPF vs displacement (radial displacement of a node in the buckle region) I notice some regions of abrupt variations and overlaps in the curve, which is...

Sorry, forgot to paste the link...here it ishttp://files.engineering.com/getfile.aspx?folder=9bfc4711-a06b-4335-8624-8f4bdea2644f&file=1-n0-part.png

Hello, I'm working on the buckling of cylindrical shells subjected to axial loading. In my case the cylinder is resting on 4 columns, so there is a possibility of local buckling above the support. I'm carrying out the non linear analysis in abaqus using riks procedure. The problem is when I...