I am simulating the transmission line structure by ANSYS 19.2 workbench. I use link 180 element and the initial shape of the transmission line is a parabola. Its connection between the transmission tower and line is assumed pin-pin connection. But I cannot realize the form finding part of transmission line. It always shows like this: The value of UZ at node 399 is 4.033743309E+13. It is greater than the current limit of 1000000 (which can be reset on the NCNV command). This generally indicates rigid body motion as a result of an unconstrained model. Verify that your model is properly constrained.
What should i check next? Thank you.