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What to do with this error " Failed to find consistent initial values. Undefined value found.Undefined value found in the stiffness matrix"?
Posted Sep 21, 2017, 9:47 a.m. EDT Fluid & Heat Version 5.3 0 Replies
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Hi guys,
I'm trying to simulate 3D model of Vibrating beam in fluid flow which has a 2d counterpart in Comsol application gallery. I've met this kind of frequent error like shown below. I checked the boundary conditions serveral times and it's not a complicated one, I didn't find the problem. I also scaled down the dimension of the geometry and refined the mesh, it still turned out the same error. I f anyone has some idea about how to deal with the error, I'll be very grateful. Best Regards
Failed to find consistent values. Undefined value found. Undefined value found in the stiffness matrix.
For mesh-case there are 54 equations giving NaN/Inf in the matrix rows for the variable x.
For mesh-case 1 there are 54 degrees of freedowm giving NaN/Inf in the matrix columns for the variable x.
For mesh-case 1 there are 54 degrees of freedowm giving NaN/Inf in the matrix columns for the variable y.
For mesh-case 1 there are 54 degrees of freedowm giving NaN/Inf in the matrix columns for the variable z.
Last time step is not converged.
Hello Chuanliang Xie
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