ICAMS / Interdisciplinary Centre for Advanced Materials Simulation

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On the application of crystal plasticity finite element method approach to the modeling of wear mechanisms

Date: 29.08.2018
Time: 02:00 p.m.
Place: Sino-German Symposium and Summer School, Bochum, Germany

Hamad Hassan
Zhanfeng Wang
Zongwei Xu
Jianguo Zhang, China
Alexander Hartmaier
Fengzhou Fang
Yongda Yan
Tao Sun, Harbin Institute of Technology, Harbin, China

In the scope of this work, crystal plasticity (CP) modeling approach coupled with finite element method (FEM) has been developed to study wear behavior of crystalline materials. Johnson-Cook damage model is implemented in the crystal plasticity model including temperature and strain rate effects and the separation of material is realized using element deletion technique for FEM based simulations. A series of parametric studies is performed for different process parameters like depth of cut and tool rake angle for single crystal. The global results like tool reaction force, shape of the formed chip and numerical efficiency are compared for different models. The local results like stress and strain-distribution at the tool tip are also compared for different cases. In the next step, simulations are performed for polycrystals. The findings show that the CP-FEM method can be successfully applied to study and understand different mechanism of wear.

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