Ansys Employee

are the strand modeled as beam elements or as solid elements?

Also, are you properly fixing the ends of the strand? try to keep algorithm as default and use smaller factor for the normal stiffness of the nonlinear contact such as 0.01 along with smaller time steps and see if that helps?

In 2020R2 (which will be available for student community shortly) has new improvement for contact detection that would help too.