An Evaluation of Different Damage Models when Simulating the Cutting Process Using FEM

The current study compares two damage modeling approaches in metal cutting finite element simulations; the Johnson-Cook shear failure model and the progressive damage model. The first assumes sudden failure when the set criterion is met; however, the second relies on two criteria; one for damage ini...

Full description

Saved in:
Bibliographic Details
Published in:Procedia CIRP 2017, Vol.58, p.134-139
Main Authors: Nasr, Mohamed N.A., Ammar, Mohamed M.A.
Format: Article
Language:English
Subjects:
Damage
Finite element method (FEM)
Machining
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The current study compares two damage modeling approaches in metal cutting finite element simulations; the Johnson-Cook shear failure model and the progressive damage model. The first assumes sudden failure when the set criterion is met; however, the second relies on two criteria; one for damage initiation and another for damage evolution. Simulations were performed on AISI 1045 steel, and different process parameters (forces, chip thickness, temperatures and plastic strain) were compared. Also, dry orthogonal cutting tests were performed and cutting forces and chip thickness were compared to the predicted values. The current results showed better predictions when damage evolution was considered.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2017.03.202