EI、Scopus 收录
中文核心期刊
Quick Search Issue Search Advanced Search
Volume 38 Issue 3
Turn off MathJax
Article Contents
Abstract
Related Articles
Effects of specimen size and apllied strain rate on the plastic flow of FCC metals[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 398-406. DOI: 10.6052/0459-1879-2006-3-2005-378
Citation: Effects of specimen size and apllied strain rate on the plastic flow of FCC metals[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 398-406. DOI: 10.6052/0459-1879-2006-3-2005-378
shu

Effects of specimen size and apllied strain rate on the plastic flow of FCC metals

  • 清华大学工程力学系,100084

    Graphical Abstract
    • Abstract
  • The simple shear molecular dynamics (MD) simulations areperformed on single-crystal copper blocks to analyze the size and strainrate effects on face-centered cubic (FCC) metals. It is found that the yieldstress decreases with the specimen size and increases with the strain rate.Based on the theory of dislocation nucleation, a modified power law isestablished to predict the scaling behavior of FCC metals, and it agreeswell with the numerical and experimental data ranging all spatial domainfrom nano-scale to macro-scale. In the atomistic simulation at differentapplied strain rates, a critical strain rate exists for the single-crystalcopper. Below it the yield stress is nearly insensitive to the strain rate,while above it the yield stress increases rapidly with increasing strainrate. Based on the results of the MD simulation, a strain rate model isintroduced for the plastic yield stress of FCC metals at nano-scale.
    • FullText(HTML)
    • References (0)
    • Related Articles

  • Related Articles

    [1]Zhang Xu, Qin Cong, Qu Tengfei, Ma Jing. RESEARCH ON THE YIELD MODEL FOR METAL MICROBEAMS CONSIDERING THE STRESS GRADIENT EFFECTS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2024, 56(4): 1025-1036. DOI: 10.6052/0459-1879-23-516
    [2]Guo Chenggong, Li Jie. A NEW STOCHASTIC DAMAGE CONSTITUTIVE MODEL OF CONCRETE CONSIDERING STRAIN RATE EFFECT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2022, 54(12): 3456-3467. DOI: 10.6052/0459-1879-22-306
    [3]Pu Gang, Zhang Dingguo, Li Liang. DYNAMIC ANALYSIS OF SANDWICH TAPERED POROUS MICRO-BEAMS CONSIDERING SIZE EFFECT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(6): 1882-1896. DOI: 10.6052/0459-1879-19-164
    [4]Li Yabo, Song Qingyuan, Yang kai, Chen Yiping, Sun Chengqi, Hong Youshi. PROBABILISTIC CONTROL VOLUME METHOD FOR THE SIZE EFFECT OF SPECIMEN FATIGUE PERFORMANCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1363-1371. DOI: 10.6052/0459-1879-19-118
    [5]Wang Shuai, Yao Yin, Yang Yazheng, Chen Shaohua. SIZE EFFECT OF THE INTERFACE ENERGY DENSITY IN BI-NANO-SCALED-METALLIC PLATES[J]. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(5): 978-984. DOI: 10.6052/0459-1879-17-142
    [6]Liu Jianyun, Song Jingru, Wei Yueguang. DETERMINATIONS OF SURFACE ELASTIC PARAMETERS OF FCC-METALS BY USING THE CAUCHY-BORN RULE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(4): 541-547. DOI: 10.6052/0459-1879-12-372
    [7]Fei Qin, Tong An. Strain rate effects and material models of solders[J]. Chinese Journal of Theoretical and Applied Mechanics, 2010, 42(3): 439-447. DOI: 10.6052/0459-1879-2010-3-2008-680
    [8]Qijian He, Hongwei Song, Chengguang Huang. A fractal study on meso structures and size effect of metallic foams[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 370-375. DOI: 10.6052/0459-1879-2009-3-2008-034
    [9]Xiuyan Feng, Xianghua Guo, Daining Fang, Ziqiang Wang. Three-point microbend size effects for pure Ni foils[J]. Chinese Journal of Theoretical and Applied Mechanics, 2007, 23(4): 479-485. DOI: 10.6052/0459-1879-2007-4-2006-274
    [10]Weihong Zhang, Gaoming Dai, Fengwen Wang, Shiping Sun, Hicham Bassir. Topology optimization of material microstructures using strain energy-based prediction of effective elastic properties[J]. Chinese Journal of Theoretical and Applied Mechanics, 2007, 23(1): 77-89. DOI: 10.6052/0459-1879-2007-1-2006-086

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (2284) PDF downloads (913) Cited by()
    Related

    Download Center

    Author Center

    Copyright © Editorial Office of the Chinese Journal of Mechanics   京ICP备05039218号-1

    Address：15 Beishihuan Xi Lu, Haidian District, Beijing, China   China Pos：100190

    Tel：010-62536271

    Email：lxxb@cstam.org.cn

    微信公众号
    RSS

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return