Numerical investigation of opposed dies shearing process on low plasticity materials
Numerical investigation of opposed dies shearing process on low plasticity materials
复制标题
DOI：
10.1179/1743281212y.0000000100
复制
发表时间：
2014-01
影响因子：
2.1
通讯作者：
S. Yang;Y. Song
中科院分区：
文献类型：
--
作者：
S. Yang;Y. Song
对置模剪切工艺是一种精密剪切工艺，由于其特殊的工装设计和工艺运动学，可以应用于低塑性的冲裁材料。在DEFORM-2D平台下，建立了AISI 70钢冲裁件对冲模剪切的二维刚塑性有限元模型。在该模型的基础上，详细研究了金属流动速度场、有效应变和跟踪点的损伤变化等重要的场变量。并对切削面特征和成形载荷进行了预测。结果表明，对冲模剪切工艺有利于提高低塑性冲裁件的质量，延长刀具的使用寿命。
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.