MCD: Different behavior of collision-bodies on different computers

[Kai_sa]

Hello community,

I need some advice on a strange problem:

In NX-MCD you can use collision-bodies in order to define how elements collide with others.

When defining collision-bodies you can set categories to specify which geometry a collision-body should react with and which to ignore.

As a very simplified example, I have attached a MCD-Assembly consisting of two overlapping rigid-bodies (hold in place with fixed-joints) and both with dedicated collision-body.

The two collision-bodies are setup in different categories.

When I run the MCD-simulation, on MOST computers the result is as expected: Both bodies stay fixed as the different categories of the collision-bodies inhibit any reaction.

But on one of our Laptops, a HP Z-Book with a NVIDIA M2000M graphic-card, the behavior is different: Both bodies start to wiggle and move as if the collision-bodies react on each other.

When I deactivate on or both collision-bodies, everything remains fixed.

Has anyone any idea on this?!

Thx in advance!

Kai

[Kai_sa]

I should add by myself before others ask for:

• I reinstalled NX (NX 11.0.2.7 MP7)
• I updated the graphic-driver (391.33)
• I made sure, that Customer Defaults Collision Category.xls is unchanged

[Kai_sa · Accepted solution]

After opening an issue at GTAC, I received very promptly the solution 

If you intend to use collsion bodies in different categories, EXCEL is mandatory!

See here: https://solutions.industrysoftware.automation.siemens.com/view.php?si=001-9076118