Hello,
I did some eigenfrequency simulations regarding a thin steel plate with two piezos attached. (PiezoA and PiezoDUT)
I placed the piezos at the maximums of a mode shape at about 122Hz.
For the eigenfrequency calculations I did a parameter sweep with respect to the thickness of PiezoDUT. The other one, PiezoA has a thickness of 0.5mm for every simulation.
So, what I got are the eigenfrequencies of the structure for the different thicknesses of PiezoDUT.
I think the results from the eigenfrequency calculation are correct, aren't they?
In the next step I want to do a frequency domain calculation where I want to excite PiezoA with a voltage with the calculated eigenfrequency of the structure in respect of the thickness of PiezoDUT. The voltage at PiezoDUT is what i want to calculate.
The problem i got here: When I excite the PiezoA with the eigenfrequency of the structure i got the following error:
----------------------------------------------------------------------------------------------
Failed to find a solution.
The relative residual (0.0028) is greater than the relative tolerance.
Returned solution is not converged.
----------------------------------------------------------------------------------------------
Please, could somebody help me with this problem?
Kind regards,
Christoph
I did some eigenfrequency simulations regarding a thin steel plate with two piezos attached. (PiezoA and PiezoDUT)
I placed the piezos at the maximums of a mode shape at about 122Hz.
For the eigenfrequency calculations I did a parameter sweep with respect to the thickness of PiezoDUT. The other one, PiezoA has a thickness of 0.5mm for every simulation.
So, what I got are the eigenfrequencies of the structure for the different thicknesses of PiezoDUT.
I think the results from the eigenfrequency calculation are correct, aren't they?
In the next step I want to do a frequency domain calculation where I want to excite PiezoA with a voltage with the calculated eigenfrequency of the structure in respect of the thickness of PiezoDUT. The voltage at PiezoDUT is what i want to calculate.
The problem i got here: When I excite the PiezoA with the eigenfrequency of the structure i got the following error:
----------------------------------------------------------------------------------------------
Failed to find a solution.
The relative residual (0.0028) is greater than the relative tolerance.
Returned solution is not converged.
----------------------------------------------------------------------------------------------
Please, could somebody help me with this problem?
Kind regards,
Christoph