FEBio v.2.1 compatibility

Overall purposes of the project are:

1) To provide free access to a three-dimensional finite element representation of the knee joint

2) Open development of a knee model for collaborative testing and use
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Todd Pataky
Posts: 12
Joined: Fri Nov 23, 2007 8:57 am

FEBio v.2.1 compatibility

Post by Todd Pataky » Thu Feb 26, 2015 1:50 am

Hi,
I'm trying to run the updated version (tf_joint_FEBio_v2.feb) in FEBio v.2.1 on Mac OS X but receive the following errors:

Failed loading plugin libFENeoHookeanPI.dylib
Reason: Failed to load the file.

FATAL ERROR: Rigid body rotations cannot mix prescribed and free components.
Rigid body: 0, Material: 0

I thought the neo-hookean plugin was already available in the standard FEBio release?
Do I need to build the plugin separately?

Thanks!
Todd
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Ahmet Erdemir
Posts: 77
Joined: Sun Sep 10, 2006 1:35 pm

Re: FEBio v.2.1 compatibility

Post by Ahmet Erdemir » Mon Mar 02, 2015 1:50 pm

Hi Todd,

I am relaying the information I got from Steve Maas. Apparently you don't need a plugin for the Open Knee(s) - Generation 1 model. You may want to remove the import line from febio configuration file (febio.xml) if there is any. Also, the error about NeoHookean plugin is a warning. The simulation does not work due to "FATAL ERROR: Rigid body rotations cannot mix prescribed and free components." This issue was just recently addressed. The version that I was getting this model ran was FEBio v2.1.2.6432. I am wondering if the MAC version is older. You may want to use the latest available version of FEBio.

Cheers,

Ahmet
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User avatar
Todd Pataky
Posts: 12
Joined: Fri Nov 23, 2007 8:57 am

Re: FEBio v.2.1 compatibility

Post by Todd Pataky » Mon Mar 02, 2015 5:59 pm

Hi Ahmet,
Thanks for your fast reply.
Problem solved! Everything seems to work fine with the newest FEBio version (v.2.2)
Thanks!
Todd
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