Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

error in equation residual vector.

Please login with a confirmed email address before reporting spam

Undefined value found.
- Detail: Undefined value found in the equation residual vector.
There are 1513 degrees of freedom giving NaN/Inf in the vector for the variable mod1.u
at coordinates: (0.006,0,0.001), (0.00588471,0.00117057,0.001), (0.00593617,0.00087283,0.00075), (0.00597211,0.000577805,0.0005), (0.00597111,0.000588119,0.001), ...
There are 1513 degrees of freedom giving NaN/Inf in the vector for the variable mod1.v
at coordinates: (0.006,0,0.001), (0.00588471,0.00117057,0.001), (0.00593617,0.00087283,0.00075), (0.00597211,0.000577805,0.0005), (0.00597111,0.000588119,0.001), ...
There are 1513 degrees of freedom giving NaN/Inf in the vector for the variable mod1.w
at coordinates: (0.006,0,0.001), (0.00588471,0.00117057,0.001), (0.00593617,0.00087283,0.00075), (0.00597211,0.000577805,0.0005), (0.00597111,0.000588119,0.001), ...


Hi
i am getting this error while doing the analysis in solid mechanics mode. i have not given any periodic comdition why i am getting this error.

1 Reply Last Post Apr 11, 2012, 9:31 a.m. EDT

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Apr 11, 2012, 9:31 a.m. EDT
Make sure that the material constants (Young's modulus or Lame's constants) are non-zero everywhere. It
happend to me once that by accident a property was zero because "User defined" was active
and I wanted "From Material".

Jens
Make sure that the material constants (Young's modulus or Lame's constants) are non-zero everywhere. It happend to me once that by accident a property was zero because "User defined" was active and I wanted "From Material". Jens

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.