an empty contact node list

I’m analyzing the load applied to a chair. I’m placing a Fixed Support on the floor and applying a force of -20N to the chair cushion. However, when I run the simulation, I get an “empty contact node list” error. I’m told I need to do an imprint, but I don’t know how to do it. Please help.

Perhaps, the following documentation on how to perform an imprint operation will be useful.

Also, this short documentation page on how to assign contacts may be helpful.

Hi,

For additional context, this error shows up when there are no mesh nodes within the defined “Tolerance” for a contact (in your case the contact between the chair and the ground).

Some options:

  • Increasing the contact tolerance (Contacts > <select contact 1> > “Tolerance)
  • Having a better contact configuration on the CAD level between the wheels of the chair and the ground. You probably have a ‘cylinder versus plane’ type of contact so the mesh nodes will probably be apart
  • Also note that the scale of the CAD model is wrong, because the chair seems to be 100m tall from the image that you posted