Modeling vibration in structures- software?

[engnrgirl]

I am trying to model vibrations induced from mechanical units in structures, and how it affects the structure globally. I need to locate a FEA software that will allow me to input these accelerations into the structure at certain node points or elements...

Anyone know of any software that has this capability??

 

[GregLocock]

Any FEA which offers "Dynamic" modelling should be able to do that. However, the models require a force matrix as the excitation. If you only have response (accelerometer) data then you can back-calculate the forces, with the proviso that it is an inherently risky thing to do.

You may have more luck on the FEA form.

Cheers

Greg Locock

 

[jec67]

Some time ago, I used STAAD to model vibrations in structures. It has been a while, but as I recall one can input the forces as GregLocock stated in his response.

 

[19721977]

The SAP2000 by CSI is a program that may be useful for FEA. I've heard about the good dynamic capabilities of this program.

Regards.

Juan José

 

[lippie]

STAAD has the ability to input force or accel vs. time and is good for modeling vibration of multiple equipments at different arrival times.

 

[msajjadh_imported]

SAP2000 gives more reliable results.