The theory about GABuck of the Reinforcing steel material

[hobbylofty]

The explanation about the reinforcing steel material is shown as follows:
http://opensees.berkeley.edu/wiki/index ... l_Material
Where in Figure 3, the modified formula from Gomes and Appleton(1997) is given.
Who can give the detailed explanation about the modification of the Gomes and Appleton model? I want to learn how the modified formula is obtained.

Best regards

[fmk]

you might email Prof Kunnath directly.

[hobbylofty]

Thanks for your advice, fmk.
I have written email to the developer Jon Mohle last Friday.
I will write to Prof. Kunnath directly this time.