[MBDyn-users] Initial assembly phase fails if tolerance is too small: Param_Manip(): divide by zero, probably due to singularity in rotation parameters

Resch Reinhard Reinhard.RESCH at accomp.it
Wed Apr 11 16:07:52 CEST 2012

Dear Mr. Masarati,

I believe that there is a bug somewhere in the initial assembly code.

If you run the model in the attached file with a initial assembly tolerance of 1e-16 the simulation works fine.
But if you decrease the initial assembly tolerance to 1e-20 the initial assembly procedure diverges.

Finally I get this error message: Param_Manip(): divide by zero, probably due to singularity in rotation parameters

Best regards,

Reinhard Resch

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