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Harmonic analysis with a crack?
I am trying to perform a harmonic analysis of a material sample (say a simple 2D plate) with an edge crack in it using 'Ansys R16'. I see that under sinusoidal loading condition, the two crack faces open or close and interpenetrate (after closing which is not possible practically).
1. I believe, stiffnesses of the crack faces change during interpenetration and so the results are not credible anymore.
2. I also cannot define non-linear contact behaviour (between the two crack faces) in a linear (harmonic) analysis.
How do I overcome this problem?
Bigger idea is to fit the frequency response result from the simulation with that of the experimentally determined response.
I am more than ready to provide further information if required.
Thanks in advance for your time. !!