振动给料机给料槽有限元分析

发布时间：2018-04-20 23:31

本文选题：ANSYS + 振动给料机　；参考：《昆明理工大学》2011年硕士论文

【摘要】：振动给料机在矿山、冶金等各个领域都有广泛的应用,振动给料机的稳定性和工作效率的提高对矿山给料系统的效率提高都用重大的意义。现在,振动给料机正向着高精度、高效率的方向发展,因此对给料机在动态特性方面的高要求有着重要的意义。在生产实践的过程中,振动给料机容易出现减震弹簧损坏、悬挂的金属件损坏、楼面基础振动较为激烈且电机较容易破坏等故障。因此,我们需要对振动给料机进行动力学分析,找出原因,为进一步改进振动给料机提供良好的基础。本文结合攀枝花钢铁集团有限公司选矿厂的实际生产情况,为了提高自同步振动给料机的生产稳定性和改善振动给料机的动态特性,进行了必要的研究。主要工作是对GZG2006型号的自同步振动给料机的给料槽和减震弹簧系统进行动力学分析与研究。本文所用的限元分析软件是ANSYS。在进行分析之前,首先是建立了GZG2006型号的自同步振动给料机的给料槽部分、减震弹簧部分、等效电机的部分以及整个系统的动力学有限元模型。然后对建立的动力学有限元模型进行动力学分析研究。具体的工作如下：首先,运用三维建模软件UG,对振动给料机系统进行了三维实体建模。再完成三维实体建模之后,运用有限元分析软件中的网格划分模块对其进行网格划分,生成有限元模型、以便后面计算之用。其次,在模态分析选用利用Block Lanczos算法对自同步振动给料机有限元模型进行有限元模态分析计算,得出振动给料机的的前20阶固有频率和固有振型。通过分析,振动给料机的耦合振动情况有了较清晰的了解。第三,在已经完成的模态分析计算的基础上,应用ANSYS软件的谐响应分析模块对振动给料机进行谐响应分析。谐响应分析可以求出系统的幅频动态响应曲线,得出到的结论是：振动给料机将可能在8Hz时12Hz和24Hz三个频率点附近产生共振情况。最后,对振动给料机进行了不同工况下的瞬态响应分析,主要进行空载工况下的瞬态分析和在抛掷给料工况下的瞬态分析。求出了关键节点的应力曲线和位移响应曲线和关键时间的振动给料机的振型图、位移图和应力图,对振动给料机在工作状况时的各种参数有了具体的了解。
[Abstract]:Vibrating feeder is widely used in mine metallurgy and other fields. The improvement of stability and working efficiency of vibrating feeder is of great significance to the improvement of efficiency of mine feed system. At present, vibrating feeder is developing towards high precision and high efficiency, so it is of great significance to require high dynamic characteristics of feeder. In the process of production, vibration feeder is prone to vibration absorber spring damage, hanging metal parts damage, floor foundation vibration is more intense and motor is easy to destroy and so on. Therefore, we need to analyze the vibration feeder dynamics, find out the cause, and provide a good foundation for further improvement of vibration feeder. Based on the actual production situation of Panzhihua Iron and Steel Group Co., Ltd., in order to improve the production stability of self-synchronous vibrating feeder and improve the dynamic characteristics of vibrating feeder, the necessary research has been carried out in this paper. The main work of this paper is to analyze and study the dynamics of feed slot and shock absorber spring system of GZG2006 self-synchronous vibration feeder. The finite element analysis software used in this paper is ANSYS. Before the analysis, the dynamic finite element models of the feed slot, the shock absorber spring, the equivalent motor and the whole system of the GZG2006 self-synchronous vibration feeder are established. Then the dynamic finite element model is studied. The specific work is as follows: Firstly, the three-dimensional solid model of vibrating feeder system is built by using three-dimensional modeling software UG. After the 3D solid modeling is completed, the finite element model is generated by using the mesh generation module in the finite element analysis software. Secondly, in modal analysis, Block Lanczos algorithm is used to calculate the finite element model of self-synchronous vibration feeder, and the first 20 natural frequencies and modes of vibration feeder are obtained. Through analysis, the coupling vibration of vibrating feeder is clearly understood. Thirdly, on the basis of the modal analysis and calculation, the harmonic response analysis module of ANSYS software is used to analyze the harmonic response of the vibrating feeder. The dynamic response curve of the system can be obtained by harmonic response analysis. It is concluded that the vibration feeder will produce resonance near the three frequency points of 12Hz and 24Hz during 8Hz. Finally, the transient response of the vibrating feeder under different conditions is analyzed, mainly under the no-load condition and the transient analysis under the condition of throwing the feedstock. The stress curve and displacement response curve of the key node and the vibration mode diagram, displacement diagram and stress diagram of the vibration feeder at the critical time are obtained, and the various parameters of the vibrating feeder in the working condition are understood concretely.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH237.1

【参考文献】