Numerical investigation of opposed dies shearing process on low plasticity materials

Abstract

The opposed dies shearing process is a precision shearing process and can be applied to low plasticity blanked materials due to its special tool design and process kinematics. In the present study, a two-dimensional (2D) rigid plastic finite element model of opposed dies shearing of an AISI 70 steel blanked part was developed under the DEFORM-2D platform. Based on this model, important field variables such as metal flow velocity field, effective strain and damage variations at the tracking points were investigated in detail. and the cut surface features as well as the forming loads were predicted. The results indicate that the opposed dies shearing process is beneficial in improving the quality of low plasticity blanked parts and prolong the service lives of cutting tools.

Keywords:

• AISI 1070
• Opposed dies shearing
• Numerical simulation
• Finite element method

Acknowledgements

The authors would like to thank the Natural Science Foundation of China for Distinguished Young Scholars (grant no. 50725517) for the support given to this research.