Modeling the effects of microstructure in metal cutting |
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Authors: | A Simoneau E Ng MA Elbestawi |
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Affiliation: | aMcMaster Manufacturing Research Institute, McMaster University JHE 316, 1280 Main St. W., Hamilton, ON, Canada L8S 4L7 |
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Abstract: | Continuous chips from experimental orthogonal cutting of materials with a heterogeneous microstructure such as 1045 steel are better represented by finite element (FE) models that incorporate material microstructure into the model. A macroscale FE model that incorporated the material microstructure into the model was developed. This approach was found to be more accurate in reflecting the chip formation process than conventional homogeneous models. The heterogenous model showed a rippled chip free surface and defects on the machined surface. The plastic strain was much larger from the heterogeneous FE model versus the homogeneous model due to strain localization during chip formation. |
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Keywords: | Microscale Macroscale Microstructure Finite element modeling Strain localization |
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