Problem with solution

Please login with a confirmed email address before reporting spam

HI. i receive the following error11: Failed to find a solution for the initial parameter. Singular matrix.

There are 1 void equations (empty rows in matrix) for the variable comp1.solid.b_rig1. at coordinates: (0,0,0), ... There are 1 void equations (empty rows in matrix) for the variable comp1.solid.c_rig1. at coordinates: (0,0,0), ... There are 1 void equations (empty rows in matrix) for the variable comp1.solid.d_rig1. at coordinates: (0,0,0), ... There are 64589 void equations (empty rows in matrix) for the variable comp1.u2. at coordinates: (-0.741714,-0.509766,0), (-0.759344,-0.507377,0), (-0.741714,-0.509766,0.5), (-0.772365,-0.487326,0), (-0.719307,-0.551944,0), ...

There are 64589 void equations (empty rows in matrix) for the variable comp1.v2. at coordinates: (-0.741714,-0.509766,0), (-0.759344,-0.507377,0), (-0.741714,-0.509766,0.5), (-0.772365,-0.487326,0), (-0.719307,-0.551944,0), ... can someone help me?



1 Reply Last Post 22.09.2024, 15:22 GMT-4
Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 2 months ago 22.09.2024, 15:22 GMT-4

This is an effect of that a domain is not meshed, only its boundary. So degrees of freedom are allocated in nodes on the boundary, but there are no equations defining them.

-------------------
Henrik Sönnerlind
COMSOL
This is an effect of that a domain is not meshed, only its boundary. So degrees of freedom are allocated in nodes on the boundary, but there are no equations defining them.

Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

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.