Coincident only for pairs ?

weedywhizz
weedywhizz
in 3D Modeling

Hi,

I'd like to create coincident contraints on more than 2 faces. There seems no way to do it or am I missing something ?

Cheers
Steffen

Comments

  • Roy Klein Gebbinck
    Roy Klein Gebbinck

    You are right: _dmCoincident3d requires a pair of subentities (faces and/or edges). Using the _dmRigidSet3d can be a good, more versatile, alternative. For instance in the Window_1x1.dwg the 8 Coincident constraints can be replaced by 4 RidgetSet constraints.

  • Joe Dunfee
    Joe Dunfee

    I am not sure how BricsCAD currently handles that situation. Technically, it is an over-constrained situation. Most 3D modeling programs have become more tolerant of that situation over the years.

    -Joe

  • Roy Klein Gebbinck
    Roy Klein Gebbinck
    edited July 2017

    @Joe Dunfee:
    The model need not become over-constrained. Example: you might have 4 nuts that each have a face that coincides with the face of a plate. Using _dmCoincident3d you need to specify 4 separate constraints. With _dmRigidSet3d a single constraint can accomplish the same. But in both cases the model will not be over-constrained.

This discussion has been closed.