Piping Vibrations

[SPLIT]

I am performing a dynamical analysis and trying to reduce the vibrations of a FRP piping by ussing a modal analysis.The modes obtained are very near to each other.¿Does it mean that there is no solution , each time that I change the frcuencies by increasing the rigidity, I get near to other natural frecuencies ?

 

[ruth44]

do you know the frequency of the loads that excite your pipe? If so, than your first effort should be the get the natural frequencies of your pipe away from the load frequencies.

 

[SPLIT]

I do not have imformation regarding the loads.I just have the vibration frecuency spectra ( Amplitude v/s frecuency ).The vibration should be self induced

 

[sms]

Sounds like you need to add damping to the system rather than trying to modify the stifness.