Two-parameter characterization of low cycle,hysteretic fatigue data

查看全文 作　　者：Sheng [1]BAO;Wei—liang [1]JIN;Sidney A. [2]GURALNICK;Thomas [3,4]ERBER

机构地区：[1]Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China;[2]Department of Civil Engineering, Illino& Institute of Technology, Chicago, IL 60616, USA;[3]Department of Physics, lllino& Institute of Technology, Chicago, IL 60616, USA;[4]Department of Applied Mathematics, Illinois Institute of Technology, Chicago, IL 60616, USA

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》索引2010年第11卷第6期,共6页

基　　金：supported by the National Natural Science Foundation of China (No. 50901067);the Technological Research and Development Programs of the Ministry of Railways of China (No. 20101007-EG);the Julian S. SCHWINGER Foundation,USA 摘　　要：The aim of this research is to characterize the development of fatigue damage by means of stress-strain hysteresis.Experiments were conducted on 14 specimens made of cold-finished unannealed AISI 1018 steel.Results demonstrate that the mechanical hysteresis loop areas,when plotted as a function of the number of loading cycles,show significant variations and demonstrate the three principal stages concerning the progress of the fatigue failure—initial accommodation,accretion of damage and terminal failure.These three stages of fatigue are marked by the transitions at cycles N2 and N3.Experimental results show that although fatigue life Nf ranges from 2644 cycles to 108 992 cycles,the ratios of N2/Nf and N3/Nf tend to be stable:N2/Nf=10.7%,N3/Nf=91.3%. 关键词：Hysteresis loss Fatigue life Fatigue damage

相关文献

参考文献（24）
引证文献（1）
耦合文献（0）

参考文献(24)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Two-parameter characterization of low cycle,hysteretic fatigue data

参考文献(24)

引证文献(1)

用户提示