I'm performing a fatigue study which uses multiple static studies under the "find cycle peaks" options to estimate component life and damage for 2 million cycles. Each static study takes about an hour to run. The four static studies I have created are all set to save the FEA results to a subfolder which is contained where the assembly is saved. All studies run successfully with no warnings. I make no changes to the assembly model. I close the assembly and then reopen it and the yellow triangle with the exclamation mark icon appears beside the study tab at the bottom corner of the screen indicating that the results are invalid although absolutely nothing has been changed.
When I right click on the study and hit the "What's Wrong" button, I get this:
and the results are not greyed out so they're still there
This means that I have to rerun each static study when I want to make minor changes to the fatigue study and rerun that. This is a huge waste of time! I have never had this issue before. Has anyone else run into this same problem?