Why don't chips curl when the cutting process is simulated using the CEL method?

[Nir_k]

Hello everyone, I am doing a simulation of orthogonal metal cutting process using CEL method. To make sure the simulation is better, I found a very good SCI paper for reference, but unfortunately I didn't reproduce the perfect chip simulation in the author's paper, the picture below shows the setup of my simulation and the simulation in the paper. (The parameters of material properties of workpiece, parameters of constitutive model and mesh size are exactly the same as those in the paper.) May I ask why the chips in my simulation are not curled normally and form serrated chips? Are there other settings in the CEL simulation that I am not aware of? Any help would be greatly appreciated!
paper link:

https://www.sciencedirect.com/science/article/pii/S1569190X22000302

 

[FEA way]

It's a matter of physics - chip curling and segmentation occur naturally depending on the material properties and process conditions (cutting speed, depth and so on). So make sure those are correctly modeled in your case. Also, look for anything that isn't taken directly from the research paper but assumed by you.

 

[Nir_k]

FEA way, Thanks for your suggestions!