Is there any way of distinguishing between compression or extension spring in Spring option in Motion Analysis?
You mean one that does one and not the other?
Or input details hat are different in each direction?
I think I might have figured it out. It all comes to the free length of the spring. With the compression spring the FL is bigger then minimum and maximum working length of the spring. Opposit if it comes to the extension spring. Is that correct?
i'm not sure what you mean here
Isn't one spring force in tension and the other in compression based on their free length settings?
not sure what you mean here either
a spring is a spring
when it is displaced X, the software provides a force relative to the k
That gives magnitude, but what about direction.
When the digitial analysis is "released" is the spring force going to move out from the "center" or move in towards the "center" of the "spring"?
The spring starts at a certain length, it has no force
When it is stretched, it has an inward force
When it is compressed, it has an outward force
Free length is essentially an override to provide a preload
yes, but when you preload them with a free lenght, which occures in most cases,you define compression spring by giving FL bigger than working range and with extension spring smaller than working range. Am I correct?
i believe that to be correct
but i think the point i'm trying to make is that the software doesn't deliineate between the 2
its a spring, it doesn't only have compressive or extensive properties
I have a case where I want a compression spring to act between two faces, if those faces are close enough.
If the faces are not close enough, I don't want the spring to pull them together.
I would not like/can't put a 3rd object in the model to be a spring surface.
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