Numerical simulation of dynamic characteristics and parameter optimization of flip-flow screen surface

被引：0
作者：
Wu J. [1 ]
Liu C. [1 ]
Wang Z. [1 ]
Jiang H. [2 ]
Zou M. [1 ]
Qiu W. [1 ]
机构：
[1] School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou
[2] School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Experiment design; Numerical simulation; Parameter optimization; Response surface method; Screen surface; Sub-model;
D O I：
10.11817/j.issn.1672-7207.2019.02.009
中图分类号：
学科分类号：
摘要：
Aiming to solve the problem about the damage of the screen mat of flip-flow screen, finite element analysis model of screen surface was established with consideration of the assembly form and working conditions of the screen surface. The distributions of deformation and stress at different positions on the screen surface under working conditions were analyzed. By combining the response surface method with the optimization technique and taking the installation radius and bending angle as the design variables, the second-order response surface approximate model reflecting the installation parameters and the stress of the screen surface was established through the design of the central composite test. The influence rule of the design variables on working stress of screen mat was analyzed. The response surface approximation model was optimized by combining the objective programming optimization method and NSGA-Ⅱgenetic algorithm, and the optimal geometric installation parameter was obtained. The results show that the shearing stress of screen surface is mainly distributed in the center of bending area. Through optimization, the minimal shearing stress is obtained when bending radius is 22.5 mm and the bending angle is 150°, 12.6% lower than the initial value. © 2019, Central South University Press. All right reserved.
引用
收藏
页码：311 / 320
页数：9
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