本文選題：ANSYS + 振動給料機�。� 參考：《昆明理工大學》2011年碩士論文

【摘要】：振動給料機在礦山、冶金等各個領域都有廣泛的應用,振動給料機的穩(wěn)定性和工作效率的提高對礦山給料系統(tǒng)的效率提高都用重大的意義�，F(xiàn)在,振動給料機正向著高精度、高效率的方向發(fā)展,因此對給料機在動態(tài)特性方面的高要求有著重要的意義。在生產(chǎn)實踐的過程中,振動給料機容易出現(xiàn)減震彈簧損壞、懸掛的金屬件損壞、樓面基礎振動較為激烈且電機較容易破壞等故障。因此,我們需要對振動給料機進行動力學分析,找出原因,為進一步改進振動給料機提供良好的基礎。 本文結合攀枝花鋼鐵集團有限公司選礦廠的實際生產(chǎn)情況,為了提高自同步振動給料機的生產(chǎn)穩(wěn)定性和改善振動給料機的動態(tài)特性,進行了必要的研究。主要工作是對GZG2006型號的自同步振動給料機的給料槽和減震彈簧系統(tǒng)進行動力學分析與研究。 本文所用的限元分析軟件是ANSYS。在進行分析之前,首先是建立了GZG2006型號的自同步振動給料機的給料槽部分、減震彈簧部分、等效電機的部分以及整個系統(tǒng)的動力學有限元模型。然后對建立的動力學有限元模型進行動力學分析研究。具體的工作如下： 首先,運用三維建模軟件UG,對振動給料機系統(tǒng)進行了三維實體建模。再完成三維實體建模之后,運用有限元分析軟件中的網(wǎng)格劃分模塊對其進行網(wǎng)格劃分,生成有限元模型、以便后面計算之用。 其次,在模態(tài)分析選用利用Block Lanczos算法對自同步振動給料機有限元模型進行有限元模態(tài)分析計算,得出振動給料機的的前20階固有頻率和固有振型。通過分析,振動給料機的耦合振動情況有了較清晰的了解。 第三,在已經(jīng)完成的模態(tài)分析計算的基礎上,應用ANSYS軟件的諧響應分析模塊對振動給料機進行諧響應分析。諧響應分析可以求出系統(tǒng)的幅頻動態(tài)響應曲線,得出到的結論是：振動給料機將可能在8Hz時12Hz和24Hz三個頻率點附近產(chǎn)生共振情況。 最后,對振動給料機進行了不同工況下的瞬態(tài)響應分析,主要進行空載工況下的瞬態(tài)分析和在拋擲給料工況下的瞬態(tài)分析。求出了關鍵節(jié)點的應力曲線和位移響應曲線和關鍵時間的振動給料機的振型圖、位移圖和應力圖,對振動給料機在工作狀況時的各種參數(shù)有了具體的了解。
[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.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH237.1

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