铜单晶拉伸试样表面滑移带痕迹的晶体塑性分析

采用建立在晶体塑性理论基础上的晶体塑性有限变形计算方法,针对铜单晶试样单轴拉伸过程中晶体滑移在试样表面留下的滑移带痕迹进行了数值研究.作者利用三维有限元模拟不同取向铜单晶试样的拉伸变形,通过晶体塑性滑移面与试样表面交线的几何分析,得到了试样在不同晶向拉伸下不同滑移系启动造成的试样表面滑移痕迹,并对数值计算的试样表面滑移...

ANALYSIS OF SLIP-BAND TRACE ON SPECIMEN SURFACE OF SINGLE CRYSTAL COPPER UNDER TENSION

Based on crystal plasticity theory, the slip-band trace on the specimen surface of single crystal copper tensioned uniaxially is investigated by applying FEM associated with finite deformation numerical algorithm, and the three dimensional plastic slipping is simulated for single crystal copper specimen tensioned in different orientation. Through the geometric analysis of intersect-line between active crystallographic slip-plane with specimen surface, the different slip-band trace of the specimen surface is calculated and discussed, which is brought by tension in different orientation that leading different slip-planes are activated. According to the analyses of specimen surface slip-band, it is confirmed that the crystalline plasticity simulation is available to research the processes of slip-band trace formed on specimen surface of single crystal.