Harmonic analysis

[sdissem]

Hi,

I made the tutorial 11 "Eigenvalue analysis of an elastic beam" in order to see how the linear elasticity solver works with modal analysis. Then, I tried to use the Harmonic analysis instead of the eigen analysis and I put a frequency close to the first eigenvalue in the tutorial. The problem is that I don't reach the convergence in this case. I may not have made things correctly but I don't know where my mistake is. Here is my sif file, thanks in advance,

Best regards,

Slim

[raback]

Hi Slim

It may be that the problem is indeed more difficult to solve. After all at resonance a finite load results to infinite amplitude. Perhaps the linear methods are not optimal close to resonance.

-Peter

[spacether]

Would adding damping make this problem converge more easily?
That way the max amplitude should be discrete, right?