Contact Help

Try creating contact sets between specific sets of faces using the "No penetration" option.

Hi peter,

may be the automatic find contact sets option does not work because at the starting of simulation the faces are not connected with each other. some times during applying forces some faces comes in contact with each other. hence at that condition we have to manually put no penetration contact between the selected faces.

So try to add contacts manually between the faces which u are sure about that they will be come in contact during the force application.

Hope this helps.

Regards

Devi Prasad Samal

This also seems like a situation where you could employ symmetry to make the simulation go faster and avoid the tedium of making 72 contact sets manually.

Not sure though since gear interactions seem like kind of complex phenomena.

I am not sure what you mean by face gear.  How are you applying your forces and restraints?

Since the teeth of the gears are curved surfaces they are only going to be pushing against each other at the point of contact where the two surfaces are tangent to each other at any given instant.  So, at best you will have to choose a point in time where the two teeth are touching and then create a split line at the point of contact for both gears and then you can create a contact set along that line.  I have done similar studies in the past but only on an individual gear at a time so as to avoid this contact set issue.  Also, depending on how large a force or torque you are applying, you may see some high localized stress and possibly deformation along the line of contact that is not really accurate.

I hope this was a bit of help.

Ryan W.