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Rainflow-counting algorithm

darda's picture
Submitted by darda on Mon, 2008-10-06 19:11.

Hello Everyone

Cycle counting is used to summarize (often lengthy) irregular load-versus-time histories by providing the number of times cycles of various sizes occur. The definition of a cycle varies with the method of cycle counting. ASTM E1049 cover the procedures used to obtain cycle counts by various methods, including level-crossing counting, peak counting, simple-range counting, range-pair counting, and rainflow counting. Cycle counts can be made for time histories of force, stress, strain, torque, acceleration, deflection, or other loading parameters of interest.

  I think some discussion about the above and some information about developed softwares or Toolboxes be really helpful for me. 

 Thanking you

Sadegh darda


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Nieslony's picture

Rainflow for Matlab

Submitted by Nieslony on Wed, 2008-10-29 07:52.

Hi Sadegh darda,

If you are familiarly with the Matlab software then look on Mathworks file exchange pages:

http://www.mathworks.com/matlabcentral/fileexchange/3026

for rainflow-counting written by me. Have fun and best regards,

Adam Nieslony


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darda's picture

Request

Submitted by darda on Fri, 2008-11-21 15:30.

Hi Dear Adam Nieslony

Thank you for your reply, and sorry in writing

Unfortunately I couldn’t download your developed program on Mathworks
file exchange pages, because of some limitation in my country; I don't have
permission to access that site

I want to request you to send me the program by email,

My email addresses are: dardaei@modares.ac.ir  and sadegh_dardaei@yahoo.com

Looking forward to hearing from you soon

Thank a lot.

 

 

 


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Roozbeh Ashoori's picture

file download Request

Submitted by Roozbeh Ashoori on Fri, 2008-11-21 16:50.

hello darda

I may send you the file via email ;-)

Hope that it would help you!

The limitation of the site for Iran cannot be removed by me...Frown

 


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darda's picture

thanks

Submitted by darda on Sat, 2008-11-22 05:27.

hi dear roozbeh ashoori, I recieve yoiur e-mail and download the program,now I should learn to work with it!

Thank you for you help. 

best regard

darda


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Rainflow matlab program

Submitted by brunoserrano on Mon, 2008-11-24 21:22.

Hi,

I have donne the rainflow program last week for my MSC work. So if you want it just ask. The in put of my program is a vector with peak's and valley. I have donne the program based on the book "Fatigue Testing and Analysis - Theory and Practice" of Yung-Li lee et al.

See you.


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Looking for some references about damage mechanics!

Submitted by zhenglight on Tue, 2008-11-25 06:45.

linearire.Revue Francaise de Mecanique,1974, 50-51

2、Lemaitre J, Plumtree A. Application of damage concepts to predict creep-fatigue failures. Journal of engineering materials and technology. Transactions of ASME. 1979,101:284-292

3、Wang J. Low cycle fatigue and cycle dependent creep with continuum mechanics. International Journal of damage mechanics. 1992a,1(2):237-244

Who can help me？
zhenglight@126.com


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