Conversion of Time History to Response Spectrum 1

[thepricedude]

Hi,

I want to convert a time history record of an earthquake into a response spectrum. I am aware of the theory behind this but would like to locate software that can do it for me without setting out to write something myself. Has anybody developed something that they would bewilling to share, or is there any Freeware out there that you can recommend?

With thanks.

 

[FeX32]

Now it comes down to whether the OP's time history is the time history of a structure or of just the earthquake itself.

Fe

 

[FeX32]

All in all. Good one Tom.

Fe

 

[spongebob007]

FFT is NOT a response spectrum. I use a program called UERD Tools to generate SRS curves. I can also do it with NASTRAN. If you really want to write your own program the math can be found in almost any vibrations textbook.