Transactions of Materials and Heat Treatment

Title：Mathematics modeling and simulation analysis of roll shape on non-uniform slender axle straightening

Authors： Li Bianjing Shang Jinlong Zhang Chunsheng Wang Yingjie

Unit： Yanshan University

KeyWords： non-uniform slender axle elastic-plastic bending straightening mathematics modeling simulation analysis

ClassificationCode：

year,vol(issue):pagenumber：2014,39(4):143-148

Abstract：

Non-uniform slender axle must be straightened before being used because it usually gets ellipse, bending and other defects in the process of fabrication because of the stiffness difference, stress concentration and some other reasons. According to the elastic-plastic bending theory, the relationship was deduced between bending deflection and bending moment, energy consumption when the work-hardening effect is under consideration. The mathematics modeling was performed after optimizing the related straightening parameters with the help of the MATLAB genetic algorithm toolbox. Based on the finite element analysis software MARC, some simulation analyses were conducted. In the end, the distribution of inner residual stress, roundness and straightness of straightening parts under three straightening speeds in postprocessing were contrastive analyzed，and then the rule of influence of straightening speed on straightening accuracy was found out.

Funds：

秦皇岛市科学技术研究与发展计划项目（2012021A002）

李边境（1968-），女，本科，讲师

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