Hi guys,

I am trying to perform a modal analysis of a pre-tension 2D array of 4-strut simplex tensegrity plate in Abaqus. Can anyone tell me how to apply pre-tension to the struts and cables for modal analysis in Abaqus?

For now, I was able to perform modal analysis without pretension and did get mode shapes. But only the first two were similar to plate mode shapes and the remaining modes have in-plane or only corner motion. I want to study the influence of pretension in mode shapes and for that, I need to apply pre-tension.

Here I am attaching the abaqus input file