Seam weld duplicate elements
Hi all,
I'm pretty new to Hypermesh and running into a problem I can't understand, or find clear documentation on.
I'm trying to create a seam connector along a rectangular set of lines, in order to link two components using RBE2s. The issue I'm running into is that doing it this way causes HM to generate duplicate elements in certain positions which must then be manually deleted (and hence, unrealising the connector).
Here's my sample model: a 3D hex mesh and a separate, 2D shell mesh. I projected the profile of the solid onto the surface and generated cut lines prior to meshing, so that both sets of elements match and are aligned properly.
I then generate and realise a seam connector by selecting the four lines on the 2D surface using the 'location -> linelist' option. This gives the result pictured, which looks like what I want.
However, HM actually generates two connectors, one containing three segments of the line, and the other containing the single line which closes the loop. I would have expected HM to create a single connector containing the whole loop.
One connector:
The other connector:
The end result is that where the two connectors meet, duplicate 1D elements are generated (isolated in the below image)
I can work around this issue by using 'nodelist' as the location, rather than the lines. But it seems like I should be able to specify the location using lines, without generating duplicates. I also don't understand why this issue occurs in only two of the four corners. Is there something fundamental I'm missing?
Thanks!