Bending Properties of GCr15 Steel Guide Rail under the Multi-step Loading  

作　　者：卢红 JUNG Jae-Youn 

机构地区：[1]School of Mechanical and Electronic Engineering, Wuhan University of Technology [2]School of Mechanical and Aerospace System Engineering, Chonbuk National University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第4期561-564,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Open Research Foundation of State Key Lab of Digital Manufacturing Equipment & Technology in Huazhong University of Science & Technology (No. DMETKF2009016);the Hubei Province Science Founda-tion (No.2008CDB274);the Wuhan High-Tech Development Project Founda-tion (No.200812121559);the International Collaborative Research Funds of Chonbuk National University, 2008

摘　　要：To analyze the bending properties of GCr15 steel guide rail based on the elastic-plastic theory, the novel bending loading method consisting of multi-step loading and corresponding unloading was applied in three specimens with different cross section shape and different heat treatment condition. According to the experimental results, using numerical calculation software program and the numerical simulation with finite element analysis （FEA）, the relationships among the maximal load and displacement on cross section shape with each step bend loading, the loading stroke with the heat treatment condition, and the loading stroke with cross section shape were gained, and also those curves were discussed qualitatively. Finally, the contrast results between the numerical simulation and experiment were carried out to study the influence about the multi-step loading on specimen. It is put forward that enlightenment for the straightening stroke in the precision linear guide rail manufacture process.To analyze the bending properties of GCr15 steel guide rail based on the elastic-plastic theory, the novel bending loading method consisting of multi-step loading and corresponding unloading was applied in three specimens with different cross section shape and different heat treatment condition. According to the experimental results, using numerical calculation software program and the numerical simulation with finite element analysis （FEA）, the relationships among the maximal load and displacement on cross section shape with each step bend loading, the loading stroke with the heat treatment condition, and the loading stroke with cross section shape were gained, and also those curves were discussed qualitatively. Finally, the contrast results between the numerical simulation and experiment were carried out to study the influence about the multi-step loading on specimen. It is put forward that enlightenment for the straightening stroke in the precision linear guide rail manufacture process.

关 键 词：bending properties guide rail multi-step loading stress-strain curve elastic modules 

分 类 号：TG142.1[一般工业技术—材料科学与工程]