当前位置: X-MOL 学术Contin. Mech. Thermodyn. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Void growth and morphology evolution during ductile failure in an FCC single crystal
Continuum Mechanics and Thermodynamics ( IF 2.6 ) Pub Date : 2020-09-12 , DOI: 10.1007/s00161-020-00922-z
Madhu Kiran Karanam , Viswanath R. Chinthapenta

Void growth and morphology evolution are studied using a 3D representative volume element with a spherical void embedded in an FCC single crystal. The plastic flow contours are studied to determine the scenarios leading to fully plastic flow and plastic flow with elastic region. Further, the effect of anisotropy on void growth is studied through three initial crystallographic orientations (ICOs) [100], [110], & [111] with respect to loading direction. Void growth and macroscopic stress variations with applied strain are obtained from our simulations. It is observed that the peak stress corresponds to rapid void growth initiation. The peak stress is found to be dependent on void volume fraction and ICO. Furthermore, an additional geometrical parameter, diagonal distortions \((D_{d_{i}})\) is introduced to classify the non-spheroidal void shapes observed in deformed anisotropic crystal.



中文翻译:

FCC单晶延性破坏过程中的空洞生长和形态演变

使用3D代表性体积元素(在FCC单晶中嵌入球形空隙)研究了空隙的生长和形态演变。研究了塑性流动轮廓,以确定导致完全塑性流动和具有弹性区域的塑性流动的情形。此外,通过相对于加载方向的三个初始晶体学取向(ICO)[100],[110]和[111]研究了各向异性对空隙生长的影响。空隙生长和宏观应力随施加应变的变化从我们的模拟中获得。观察到峰值应力对应于快速的空隙生长开始。发现峰值应力取决于空隙体积分数和ICO。此外,还有一个附加的几何参数,对角线变形\((D_ {d_ {i}})\) 本文介绍了对变形各向异性晶体中观察到的非球形空隙形状进行分类的方法。

更新日期:2020-09-12
down
wechat
bug