Rigid link versus weighted link

Forum|Forum|13 years ago
May 30, 2012
3 replies
17731 views

hello Everybody

I have a model where I want to assign a mass , but this mass is outside the model.

First I have created a point where my mass will be located but I don't know what is the best solution to link the point and the model

Use a rigid link or use a weighted link ????

Many thank for your help

Olivier

M

MatsLindqvist

1-Visitor

Weighted link allows the reference geometry to deform, the rigid link does not. I'd use weighted link if I can (it's ony available in the advanced version of simulate).

A limitation of the weighted link, is that you can't apply a constraint to the dependent point, but there's a workaround for that. This shouldn't be a problem in your case since you want to apply a mass.

/Mats L/Product specialist, simulation tools/Econocap Sweden/

O

opavot

Author

1-Visitor

Dear Mats

Many thanks for the explanation

OP

M

MatsLindqvist

1-Visitor

Ici j'ai fait un petit presentation de ce sujet:

http://www.youtube.com/watch?v=keMLlyec4B8

En suedois, mais je crois tu comprends...

/Mats L

O

opavot

Author

1-Visitor

Dear Mats

not easy to understand beacuse I don't speak the language

OP

M

MatsLindqvist

1-Visitor

It describes three different methods to constrain a shaft subject to bending and torsion, using three different methods. I use regular constraints (erroneous), rigid links (correct, but yields unnatural stress distribution around constraints), and weighted links (correct, no unnatural stress distribution, but more complicated to create).