大型球磨机筒体应力与应变有限元分析  

Finite Element Analysis of Stress and Strain of Large Ball Mill Cylinder

作　　者：王润生 

机构地区：[1]辽宁省文艺建筑装饰工程公司,辽宁沈阳110031

出　　处：《机械设计与制造》2013年第7期153-155,共3页Machinery Design & Manufacture

基　　金：沈阳市科技计划项目(F12-085-2-08)

摘　　要：筒体,是磨机工作的重要部分,其刚度和强度对球磨机的使用寿命和工作精度影响很大。过去的校核方法是将筒体简化为简支梁,再按照理论力学平面应力分析进行计算。这种计算方法得到的结果,精度不高,不能准确的反应其受力分布和变形情况。针对球磨机关键部件传统强度计算结果精确性差的问题,以筒体为研究对象,采用有限元方法进行应力与应变的有限元分析,确定筒体的应力分布和变形情况,旨在为结构优化设计提供参考。仿真结果表明,筒体的设计参数能够满足生产强度,与传统的计算结果相比,计算精度有所提高。筒体的设计安全系数比实际生产所需值大,在保证生产可靠性的前提下,可以适当的减少衬板厚度,降低制造成本。Cylinder is an important part of mill work,and its stiffness and strength has a great influence on the service life of ball mill and the work precision.The check method in the past is to simplify the cylinder for the simplicity of supported beam,and then to calculate again according to the theoretical mechanics analysis of plane stress.The calculation results required is not high in accuracy,being can＇t accurately reflect of the stress distribution and deformation condition.Aiming at the poor accuracy of the traditional strength calculation results of key components in ball mill,the stress distribution and deformation condition of the cylinder can be shown clearly with cylinder as research object and using the finite element method for stress and strain finite element analysis.All these aim to provide reference for the structure optimization design.The simulation result shows that the production intensity can be met with the original design parameters of the cylinder.The calculation accuracy is improved compared with the traditional calculation result.The design safety coefficient is larger than the actual value.Therefore it is feasible to reduce the manufacturing cost by reducing the thickness of plates under the premise of ensuring the reliability of production.

关 键 词：球磨机 筒体 应力 应变 有限元分析 

分 类 号：TH16[机械工程—机械制造及自动化]