球磨机应力和变形及减薄筒壁厚度的数值分析  

Numerical Analysis on Stress and Deformation of Ball-mill and Thickness Reduction of Cylinder Shell

作　　者：沈新普[1] 杜显赫[1] 

机构地区：[1]沈阳工业大学建筑工程学院,辽宁沈阳110870

出　　处：《沈阳理工大学学报》2010年第1期1-6,14,共7页Journal of Shenyang Ligong University

基　　金：国家自然科学基金:煤岩塑性损伤与瓦斯弥散-渗流耦合理论与试验研究项目资助(10872134)

摘　　要：为检验一给定尺寸的球磨机安全性,进而减薄筒体部分的壁厚,减少球磨机的生产成本,应用ABAQUS软件对建有人孔和物料的较精细球磨机模型的正常运转以及启动工况下的筒体受力与变形情况进行分析,采用von M ises屈服准则进行校核,没有塑性区出现,并得出了原设计尺寸von M ises等效应力最大值和减薄筒壁后球磨机的von M ises等效应力最大值均远小于材料许用应力值σ的结论,确定了原设计的安全性以及筒壁厚度减薄后的可行性,对于每台设备可节约钢材2 511.7kg,同时,人孔处的应力集中现象较明显,需要使用局部增强措施.The purpose of this study is to verify the safety of a given design ball-mill system, to reduce the thickness of cylinder shell and save the cost of production. Abaqus software has been used to analyze the strained status of cylinder shell in the elaborate model with manhole and the materiel under the working order and start-up condition. By using the von Mises yield criterion, no plastic zones are formed and conclusions are followed that both the maxi- mum von Mises equivalent stress of the original design and the reduction are less than the maximum allowable stress value [ σ]. The safety of original design and the feasibility of re- duction are determined, and 2 511.7kg of steel can be saved for each set of machine. Mean- while, the phenomenon of the stress concentration is obvious around the manhole; the appro- priate methods of local enhancement are needed.

关 键 词：球磨机 ABAQUS软件 有限元法 动态仿真 筒体 应力分析 人孔 

分 类 号：O34[理学—固体力学]