Abstract John, I am trying to share a technical article on Flutter. If the article does not go to the forum. I will try again. Be careful with terminology. You use potential energy and force as if they are interchangeable though they are not. And when you see the term elastic, it has a specific meaning when applied to structures. And look up the video of theTacomo Narrows bridge colapse from Flutter that led to destruction. There are some smart mechanical engineers on this forum that understand Flutter better than me.
Doug
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