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Realistic result?

Realistic result?

Realistic result?

(OP)
Hi everyone!

I'm a bit puzzled about a simple case dealing with bar elements.
According to the theory, this type of element only works in traction-compression.

So if we consider a simple bar, 2 nodes, one constrained and the other one vertically loaded (y axis), then the solution is as follows:

-displacement along the x axis
-constraint force in node 1 along x axis

It doesn't seem very realistic to me as the load is in the perpendicular direction, however this is in line with the bar theory. So I'm a bit confused about the validity of it now!

Any clarification would be more than welcome!!

Thanks a lot big smile

RE: Realistic result?

"According to the theory" according to what theory does a BAR work only in "traction-compression" ?

or do you mean ROD ?

if you mean ROD, then it won't react a transverse load. if you model your example, the model will just sit in the corner and have a nervous break-down.

another day in paradise, or is paradise one day closer ?

RE: Realistic result?

Or more likely, the solver will throw errors regarding unrestrained degrees of freedom.

RE: Realistic result?

I think RB said the same thing:

(the model will just sit in the corner and have a nervous break-down) = (the solver will throw errors regarding unrestrained degrees of freedom)

This made me laugh!! I've sent models to the corner many times!

RE: Realistic result?

"the model will just sit in the corner and have a nervous break-down."

Haha, I laughed at that one too. I think anyone that's spent a decent amount of time making FEA models has seen his model sit in the corner on a few occasions. I've even had models that refused to ever come back out of the corner, and I had to start all over again!

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