Sliding Surface Deck Error

[Matt Szelistowski]

When I try to analyze the attached knee geometry file in FEBio, I get the following message: "FATAL ERROR: Error in sliding surface deck. Only interface types 3 are supported."

When I try to analyze the regular *.feb file, I get "abnormal program termination."

I can't quite determine what the problem is.

Thanks.

[maas]

Hi Matt,

When using multple sliding interfaces PreView apparently places the sliding surface data in the wrong order for the NIKE format (first all control cards have to be defined and then all slave and master facets). I'll make a bug report for this. Can you also attach the FEBio input file so I can track down that "abnormal program termination".

Thanks,

Steve.

[Matt Szelistowski]

Here is the FEBio file.

Thanks again.

[maas]

Hi Matt,

A first look at this file in PreView suggests that you might have some element connectivity issues. How did you create the geometry? Could you please attach the file that you imported in PreView (for instance, the .inp file if you created this mesh in Abaqus). I want to make sure PreView reads the geometry correctly.

Thanks,

Steve.

[Matt Szelistowski]

I imported each of the attached ABAQUS files into Preview so that I could have seperate surface interaction and the whole model wouldn't be designated as one part.

Thanks,
Matt

[maas]

Hi Matt,

So when looking at your input files I see some strange things. For instance, in tibia.inp, go down to line 468, the beggining of an element section. All these elements are defined as hex elements, but the last four nodes are all the same. Since this might be the source of all the problems, I was wondering if you were aware of this? If not, I would go back to Abaqus, remesh your geometry and try to eliminate these strange looking elements.

Cheers,

Steve.