Linear Geometry and Mesh Pattern Copy Tool

Question

Linear Geometry and Mesh Pattern Copy Tool

(OP)

21 Feb 24 11:55

I am modelling a large but repetitive lattice structure with beam elements. I will be modelling the bolted connections in more detail at the various joints in the structure.

Is there a pattern copy tool in FEMAP? I've seen it in Autodesk Inventor and other CAD packages where you can define the number of copies in two differing axes, or even better, by selecting the array of relevant points.

I've yet to find it in FEMAP.

BlasMolero (Mechanical) · Answer 1 · 2024-02-21 22:02:52

Hello!,
Yes, the PATTERN approach is present in many commands in FEMAP:

You can mesh the geometry and when you copy the geometry you copy the mesh as well.
Or you can copy, reflect, etc.. mesh and you can copy the associated geometry as well.
Or you can copy the geometry with properties, and mesh ALL geometry at one time, and each geonetry with the corresponding property.

Best regards,
Blas.

~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director

IBERISA
48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog de FEMAP & NX Nastran: http://iberisa.wordpress.com/

rb1957 (Aerospace) · Answer 2 · 2024-02-21 23:01:11

do you mean so you can release freedoms at different nodes (joints) ?

"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.

WorcesterSorcerer (Mechanical) · Answer 3 · 2024-02-22 07:50:07

Hello Blas!

That's great , thank you very much. This will save A LOT of time :)

Hi rb1957,

I'm modelling the individual bolts, and at there specific spacing, connected by rigid elements, so that I can get the correct shear forces and bending moments transferred into the bolted connections.

Cheers!

Ben

rb1957 (Aerospace) · Answer 4 · 2024-02-22 17:08:23

modelling bolts with rigid elements won't give you "the correct shear force and moments".

The bolts are grouped at the ends of your truss elements (or at joints between elements), yes?

"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.

WorcesterSorcerer (Mechanical) · Answer 5 · 2024-02-22 17:16:50

No, I am not modelling bolts with rigid elements. I am modelling bolts with beam elements, connected with RBE2 rigid elements.

rb1957 (Aerospace) · Answer 6 · 2024-02-22 19:07:26

Wow ! what a detailed model. I guess it's a sign of the times ... now that computing capacity is so large and computing speed so quick we don't try to minimise either (but do we have to maximise them (with very little gain) ?

"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.

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Linear Geometry and Mesh Pattern Copy Tool