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Help with FEM drilling model

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Posts: 1
Topic starter
New Member
Joined: 11 years ago

Hi All,

I am trying to simulate the drilling process of Aluminium using JC model, the thrust force diagram Fz I get back from the simulations are not correct, I keep getting sudden drops in cutting force down to zero or below zero, its like every time the cutting tool drills through a layer of elements, once elements get deleted the cutting tool does not interact any more with the next layers for a period of time and this produces zero cutting force on my graphs, any idea of what could be the problem?

I have attached some images for my results.

Thank you

1 Reply
Posts: 3998
Joined: 5 years ago

It sounds like you explained the problem by the element removal process.
If that is a problem, perhaps you can use a finer mesh?


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