本文選題：大型動態(tài)雕塑　切入點：有限元分析　出處：《山東理工大學》2009年碩士論文　論文類型：學位論文

【摘要】： 本文針對大型動態(tài)雕塑的特征,對其機械驅動系統(tǒng)進行了深入研究,并開發(fā)了具有升降、旋轉和開合功能的大型動態(tài)雕塑機械驅動裝置。 研究了升降系統(tǒng)的設計目標及設計要求,對現有升降機構進行了類型分析與優(yōu)選,確定了齒輪齒條升降方案并進行了分析,最終創(chuàng)新設計出背靠背式齒輪齒條升降系統(tǒng)。分析了回轉系統(tǒng)的工作特點,對回轉裝置中的回轉小齒輪采取對稱布置的結構形式,從而使回轉裝置運行更加平穩(wěn)。 分析了開合機構的設計目標和要求,對開合機構進行了類型綜合并對方案進行了優(yōu)選,最終確定了液壓直拉式開合機構。在此基礎上確定了開合機構優(yōu)化設計的設計變量、約束條件、目標函數,建立了優(yōu)化設計的數學模型。利用MATLAB優(yōu)化工具箱對優(yōu)化模型進行求解。優(yōu)化設計后,液壓缸運行更加平穩(wěn)。 對動態(tài)雕塑機械驅動系統(tǒng)的關鍵零部件進行了結構設計,并利用UG軟件建立了動態(tài)雕塑的三維實體模型。建立齒輪齒條有限元模型并研究了其強度問題。結果表明所選結構及尺寸參數滿足升降裝置的強度要求。 建立以升降裝置的用鋼量最小為目標函數的優(yōu)化計算模型,利用ANSYS軟件得到其優(yōu)化結果,從中選取了一組最優(yōu)化設計序列,再次建立數學模型,分析驗證了所確定的升降裝置能夠滿足應用要求,使升降裝置的用鋼量減少20.28%。 利用UG4.0對動態(tài)雕塑進行虛擬裝配,裝配過程中對主要零部件進行了靜干涉檢驗,并確定了各零部件問的相對位置關系,進一步優(yōu)化了模型結構。按照給定的運動要求進行了虛擬仿真,分析了相關部件的位移、速度和加速度并進行了運動干涉研究。結果表明,該方案在運動方面是可行的。 本文的研究為大型動態(tài)雕塑驅動設備的研制提供了一種切實可行的設計方法,解決了由于物理樣機制造困難而無法驗證設計方案是否可行的問題,并對今后進行大型非標重載設備的研究和開發(fā)提供了重要的參考價值。
[Abstract]:According to the characteristics of large-scale dynamic sculpture, the mechanical driving system of large-scale dynamic sculpture is studied in this paper, and the mechanical driving device of large-scale dynamic sculpture with the functions of lifting, rotating and opening and closing is developed. The design objectives and design requirements of the lifting system are studied. The type analysis and optimal selection of the existing lifting mechanism are carried out, and the lifting scheme of the gear rack is determined and analyzed. Finally, the back-to-back gear rack lifting system is designed, and the working characteristics of the rotary system are analyzed. The rotary pinion gear in the rotary device is symmetrically arranged so that the rotary device can run more smoothly. The design objectives and requirements of the opening and closing mechanism are analyzed. The type synthesis of the opening and closing mechanism and the optimal selection of the scheme are carried out. Finally, the hydraulic open and close mechanism is determined. On this basis, the design variables for the optimal design of the opening and closing mechanism are determined. The mathematical model of optimization design is established under the constraint condition and objective function. The optimization model is solved by MATLAB optimization toolbox. After the optimization design, the hydraulic cylinder runs more smoothly. The structure design of the key parts of the dynamic sculpture mechanical drive system is carried out. The 3D solid model of dynamic sculpture is established by UG software. The finite element model of gear rack is established and its strength problem is studied. The results show that the selected structure and dimension parameters can meet the strength requirements of lifting device. An optimization calculation model with the minimum steel quantity as the objective function is established. The optimization results are obtained by using ANSYS software, and a group of optimization design sequences are selected from it, and the mathematical model is established again. It is proved that the determined lifting device can meet the requirements of application and reduce the steel consumption of the lifting device by 20.28%. The virtual assembly of dynamic sculpture is carried out by using UG4.0. The static interference inspection of the main parts is carried out during the assembly process, and the relative position relation of each component is determined. Furthermore, the model structure is optimized. The virtual simulation is carried out according to the given motion requirements. The displacement, velocity and acceleration of the components are analyzed and the motion interference is studied. The results show that the scheme is feasible in motion. The research in this paper provides a practical design method for the development of large-scale dynamic sculpture driver, and solves the problem that the design scheme can not be verified because of the difficulty in the manufacture of the physical prototype. It also provides an important reference value for the research and development of large non-standard heavy duty equipment in the future.
【學位授予單位】：山東理工大學
【學位級別】：碩士
【學位授予年份】：2009
【分類號】：TH211.6

【引證文獻】

相關碩士學位論文 前2條

1 白雪;硅膠裝料托盤自動搬運機械研究[D];山東理工大學;2010年

2 王曉偉;新型全自動雙端端子壓著設備優(yōu)化設計及性能研究[D];華南理工大學;2012年

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本文編號：1609544