Coefficient ratio exceeds 10^8 - check results

[Pingen]

Hi,

What does the warning: "Coefficient ratio exceeds 10^8 - check results" mean?

Pingen

 

[meshparts]

This is what I would also like to know!

I suppose it is the ratio of the biggest to the smallest coefficient in the compliance matrix. But I'm not very sure of that. It's just a guess...

If your model has two very deferent materials, with large ratio of the Joung-Modulus, then the coefficient ratio should also be large.

I would also like to know, what the other people on this forum know about this.

Regards,
Alex

 

[Pingen]

The model contains two materials and the Young's modulus are about the same. However, I'm doing a thermal-structural analysis and the thermal conductivities differ by a factor 4.

Cheers,
Pingen