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Damage Evolution definition in 2D Orthogonal Cutting

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VaggelisKas

Industrial
Joined
May 11, 2015
Messages
36
Location
GR
Hello community,

could someone enlighten me regarding the equivalent plastic displacement parameter input? My material is defined with the Johnson-Cook model
but I cannot seem to find an accurate way of calculating the equivalent plastic displacement.

The problem I am trying to simulate is a 2D orthogonal cutting example with a rigid tool.

By using a displacement I have calculated based on the element characteristic length, the result I get is as follows:
Untitled_wetwlh.png


As it is shown, my chip has been lifted from the workpiece way too early which is a mistake for this cutting speed and these materials.

I think it has something to do with damage evolution but every other opinion on the matter would be highly appreciated.

Thank you in advance.
 
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