RM Bridge has two options for Cable elements subdivision:
To calculate single load cases the subdivision of N=5 to 8 should be sufficient. This function allows for subdividing previously defined Cable structural elements and adding sagging values. It is an adaptation of the original system geometry and can be found at the Extras\Preprocessors\Preprocessor for Cable Stayed Bridges. The files should be imported for final analysis. An internal subdivision by setting Ndiv in the element property table is not possible for the construction stage analyses because the decomposition of the displacement components for relating them to the individual construction stages is not possible.
This is at Extras\Structure manipulation: Cable Subdivision (New Cable Element) allows for subdividing previously defined cable elements and creates rigid rotational constraints for all intermediate nodes in order to avoid an unstable system due to the fact, that cable elements do not have bending and torsion stiffness. The new Cable elements will be created for all elements of the element series specified for being subdivided. The numbering of the generated elements and nodes will be done automatically in ascending order, starting from user-defined start numbers. The parameters (material, cross-section, etc.) are automatically transferred from the original element to the new elements. Original elements remain and the user may activate either the original or the new Cable elements. Original elements and generated elements do not exclude each other, i.e., you must take care not to activate both sets simultaneously.