Transactions of Materials and Heat Treatment

Title：Optimal design on fatigue property of uncoiler spindle based on OptiStruct

Authors： Li Chuanjiang Yin Songhai Bi Mengran Song Majun

Unit： Shuozhou Campus of the North University of China Shaoxing Vocational School of Technology

KeyWords： uncoiler spindle fatigue life fatigue damage statics analysis shape optimization

ClassificationCode：TG385

year,vol(issue):pagenumber：2018,43(1):140-145

Abstract：

In order to improve the stress fatigue phenomenon caused by alternating stress of 6 ton uncoiler spindle, the actual working condition of uncoiler spindle was analyzed by static analysis of software OptiStruct, and the finite element pre-processing was carried out based on software HyperMesh. Then, the fatigue analysis was conducted by software Gerber, and the fatigue damage and fatigue life of uncoiler spindle were obtained based on stress rain flow counting method of OptiStruct and Miner theory. Therefore, the optimal model of uncoiler spindle was constructed taking the minimization of spindle flexibility as the objective function and the fatigue life as the constraint condition, and the optimal shape of uncoiler spindle was obtained based on OptiStruct. The comparison of mechanical and fatigue properties before and after optimization shows that its stress concentrate phenomenon decreases and its fatigue life increases significantly in the dangerous area of uncoiler spindle after optimization. Thus, based on shape optimization, the optimized size of uncoiler spindle is advantageous to the improvement of its mechanical and fatigue properties and provides a theoretical basis on structure design of uncoiler spindle.

Funds：

作者简介：李传江（1995-），男，本科，E-mail：chuanjiang_li@163.com；通讯作者：宋马军（1990-），男，硕士，讲师，E-mail：smjwade@sina.com

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