Re: How to define a PSD ?

"[email protected] [Abaqus]" <[email protected]> 08 Mar 2019 09:44:38 +0000

Newsgroups	gmane.comp.mathematics.abaqus.user
Message-ID	<[email protected]>

- In case of linear system, see the section 6.3.11 Random response analysis of the Abaqus Analysis User's Guide of the Abaqus/Documentation
 

- If the system is nonlinear you can generate an excitation process from the acceleration spectrum using the Inverse Fast Fourier Transform. After this, you can carry out a dynamic time history analysis with base excitation equal to the excitation process that you have found above.
 

 Best regards,
 

 _______________________________________________
George Papazafeiropoulos
Captain, Infrastructure Engineer, Hellenic Air Force
Civil Engineer, M.Sc., Ph.D. candidate, NTUA
Email: [email protected]