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Estimation of Normal Pressure at Tool-chip Interface Based on Finite Element Method(FEM) | ||
| Engineering and Technology Journal | ||
| Volume 24, Issue 8, August 2005, Pages 1060-1075 PDF (1.73 M) | ||
| DOI: 10.30684/etj.24.8A.13 | ||
| Author | ||
| Maan Aabid Tawfiq | ||
| Abstract | ||
| The main objective of this study is to investigate the effect of rake angle on normal pressure distribution at tool-chip interface region, in order to gain better understanding of the rake angle effects in orthogonal cutting with continuous chip formation. The effect of normal pressure at tool-chip interface for (AISI 1045 St) has been studied for cutting tools having various rake angles, which are modeled and simulated. Special FEM codes are applied, the first code is: (MSC CA/PATRAN/2004), used for preprocessing & postprocessing, while the second one is (MSC FEA/DYTRAN /2004), used for the analysis stage. Finite Element model sets for steady state orthogonal cutting are presented. The model simulates chip formation process in detail. + The modeling and simulation process is based on certain criteria called "Johnson-Cook" constitutive model for predicting dynamic material behavior, so the flow stress of the chip is taken as a function of strain hardening, strain rate and temperature. It is concluded from the simulated results, that the normal pressure is minimum when the rake angle is (5°), while the normal pressure is maximum when the rake angle is (-15°). Pressure distribution and behavior at this region are studied in detail. The results are compared with many relevant papers published in the literature and showed a good agreement with the modeled results. | ||
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