hello people
i have a question ... in this formula what is 0.64 coeficient y or k
i read in forum , the factor k used in industry is 0.41-0.5
i have problems with flat pattern in creo
if sombody teach me with a solution I would be grateful
![coeficient.jpg](https://community.ptc.com/legacyfs/online/96911_coeficient.jpg)
Thanks
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