Singularity detected at grid component Error as soon as I change my interference from 0.006" to 0.017" in a double shoulder pin-box connection.
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Hello Everyone,
I am running a make up torque static non-linear analysis on a double shoulder pin-box connection with threads modelled as grooves. FEA was running good and producing high quality results when I had my interference of two connections set at 0.006" but as soon as I increased my interference to 0.017", it started giving me "Singularity detected" error E5049 and does not converge starting from very first subcase even at 0.030% of load case. Even after 12 hours of run, it bisected with max iterations reached and did not converge at all.
I believe it is something to do with my surface contacts but not sure how to fix it. I am sharing my screenshots from 0.006" interference study that is working for contact setup and subcase setup. Please advise.
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