Hi, currently I simulation 3D milling operations.
I found the Johnson-Cook strength and failure model that I would like to use.
However, I am having issues with inputting the correct damage evaluation's fracture energy value.
For my damage evaluation i am using the energy linear softening type.
Regarding the fracture energy, I couldn't find many researches that discussed the values they inputted there. Instead just the integration of the fracture energy equation was given.
,After doing further research I found an equation that states that, the fracture energy is a function of : the material's fracture toughness, modulus of elasticity, and Poisson ratio. I attached the image of the equation in figure 2.
I found the equation referenced in the work of Zhang et al in their paper titled . "Chip formation in orthogonal cutting considering interface limiting shear stress and damage evolution based on fracture energy approach".
You can use the damage displacement, which is close to the length of the cell.
Zhongpeng Zheng, thank you sir for your reply.
I was wondering do you have or know any sources from the literature that support the claim of inputting the "length of the cell" as damage displacement value ?
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