作者
Chutian Huang, Shuyang Dai, Xiaohua Niu, Tianpeng Jiang, Zhijian Yang, Yejun Gu, Yang Xiang
发表日期
2023/9
期刊
International Journal of Plasticity
卷号
168
页码范围
103700
简介
Dislocation climb plays an important role in understanding plastic deformation of metallic materials at high temperature. In this paper, we present a continuum formulation for dislocation climb velocity based on densities of dislocations. The obtained continuum formulation is an accurate approximation of the Green’s function-based discrete dislocation dynamics method (Gu et al., 2015). The continuum dislocation climb formulation has the advantage of accounting for both the long-range effect of vacancy bulk diffusion and that of the Peach–Koehler climb force, and the two long-range effects are canceled into a short-range effect (integral with fast-decaying kernel) and in some special cases, a completely local effect. This significantly simplifies the calculation in the Green’s function-based discrete dislocation dynamics method, in which a linear system has to be solved over the entire system for the long-range effect of …
引用总数
学术搜索中的文章
C Huang, S Dai, X Niu, T Jiang, Z Yang, Y Gu, Y Xiang - International Journal of Plasticity, 2023