Pretension Frequency Response
I'm trying to analyze a model that includes pretension and vibration. I am specifically interested in the effect that pretensioning bolts to induce compressive stress at welded connections has on stress ranges during operation (vibration). The problem is that the stresses from the pretension subcase do not carry over to the frequency response analysis. I understand from this post that it's not an error in my setup, but a limitation in the program.
Is there a way to import the stresses from the pretension subcase into the frequency response subcase?
Can I conduct a linear superposition of the pretension subcase results and the frequency response subcase?
Is there another method to analyze the effect of pretension on stresses in a dynamic system?