Simscape multibody hollow flexible body

I am trying to use the "General flexible beam" block to reproduce a multi-link manipulator with flexibiity.

If I define a hollow beam profile, simulink throws this error: "The sectional properties computation is ill-conditioned for the specified cross-section. This might be due to overlapping or very close edges. Resolve this issue in order to simulate the model."

How could I solve this?

Answer 1

[Steve Miller]

Hi Zeno - you need to make sure that the cross section you have defined does not have edges that overlap. If you can add the cross section to your question, we could help you fix it. Try plotting it, you will probably see where the edges overlap.

Also check that you haven't put the same point in there twice.

--Steve

[Zeno Pavanello]

Hi Steve,

Thank you very much, I didn't realize the solution was that easy. My first and last edge were coincident, so I increased the number of edges used to generate the circular cross section and excluded the very last one. This way I get an open cross section which is almost closed, with the aperture in the order of micrometers.

Thank you for your time,

Zeno