FVP Rainflow Documentation

[KJ2]

Hi,

I'm interested in knowing how the Rainflow algorithm within DIAdem works. I'm trying to use the matrix provided by the function to calculate damage, but I'm not sure how the matrix is calculated, as it provides a matrix different to those produced by other programs , even for a short transient with a low number of classes.

According to ChnRainCalc Help, there's a document detailing the algorithm used:

"DIAdem calculates the Rainflow classification with the procedure specified in the FVA 0/14 brochure "Counting Procedures for Developing Collectives from Time Functions - comparison of the various methods and examples" of the Research Institute for Propulsion Technology (www.fva-net.de)."

but I can't seem to find it anywhere. Does anyone have a copy of/link to this document or any other documents detailing how the DIAdem Rainflow algorithm works?

Thanks

[Brad_Turpin]

Hi KJ2,

I have this document as a PDF file, but unfortunately it's in German.  The document is also too big (9 GB) to post here, and zipping it doesn't reduce its size any.  If you are interested in this German document I can post it on NI's ftp server for you to download, just let me know (brad.turpin@ni.com).

Brad Turpin
DIAdem Product Support Engineer
National Instruments

[Anderson Heringer]

Hello, my name is Anderson Heringer from MAN Latin America. I have the same difficulties to understand the rainflow results from Diadem 11.1. I can't believe that a company like NI doens't have any simple documentation describing how Diadem rainflow algorithm works. Can you share this document with us?

[Brad_Turpin]

Hi Anderson,

Back in 2008 we did not have a translated version of the Rainflow document.  In the interim we did get that translated to English-- here it is.

Brad Turpin

DIAdem Product Support Engineer
National Instruments