convergence problems

[toggi007]

Hi, I´m modeling with concrete04 and i´m having convergence problems. There is no problem if I use zero tensile strength though. But when i use tensile strains below 0.001 I will get rubbish. Still looks good when tensile strain is 0.001 but this value is of course to high! as opposed to what I would like to use is 0.0002. No algorithms work (loop)...Any Ideas?

[vesna]

Did you look at the compressive strain of the fiber with the highest compressive strain at the time the convergence problem? Check if it is smaller than the ultimate strain specified within your material. Very often this creates convergence problems when using this material.