Set the average size of the crystal

[liang Hu]

Hi All,

I want to generate a polycrystal model that has a composition of 50 grains with an average grain size of 17 microns. How should I set these parameters(Mu/Sigma/Bin Step Size/Min Cut Off/Max Cut Off). Are there any rules to guide me to set them so that I can get grains of any size I want？

Thanks

Hu  liangliang

[stopk...@gmail.com]

Hi Hu,

Mu and sigma relate to the mean of the lognormal grain size distribution along with variance per the equations commonly found online. The link below contains the information in the "Lognormal Distribution" section. You can manually change the max and min cutoff to basically specify max and min grain size, and the bin step size will determine the number of grains at a certain size. It is easiest to just manually vary these last three parameters when creating a digital microstructure model to get the desired outcome. Hope this helps!

https://www.mathworks.com/help/stats/lognstat.html

Best regards,

Kris

[liang Hu]

Hi Kris

Thanks for your reply. I have been able to set the grain size with your help.

Best regards,
Hu liangliang