【摘要】：以某W型活塞式壓縮機主傳動系統(tǒng)為研究對象,即曲軸-滾動軸承系統(tǒng)為研究對象,利用ADAMS動力學仿真軟件,研究了額定工況作用下活塞式壓縮機主傳動系統(tǒng)動力學行為。在ADAMS中分別建立剛性曲軸的壓縮機主傳動系統(tǒng)動力學仿真模型和彈性曲軸的壓縮機主傳動系統(tǒng)動力學仿真模型并求解,得到了額定工況下主軸承反力和主軸承軸頸中心徑向振動響應。 其次,在動力學仿真軟件ADAMS中,建立計入運動副摩擦的彈性曲軸的壓縮機主傳動系統(tǒng)動力學仿真模型,研究額定工況作用下計入運動副摩擦的彈性曲軸的壓縮機主傳動系統(tǒng)動力學行為。得到了相應的動力學參數(shù)及運動副上摩擦力的變化曲線。同時也揭示出壓縮機機械效率的動態(tài)變化規(guī)律。計算結果表明運動副摩擦對主軸承反力、軸承軸頸中心位移響應有顯著影響。所得到的結論對提高壓縮機的機械效率和動力學優(yōu)化提供了前提條件。 第三,建立彈性曲軸的壓縮機主傳動系統(tǒng)優(yōu)化設計數(shù)學模型,該模型以兩個主軸承軸頸中心徑向振動響應振幅為目標函數(shù),以壓縮機氣缸中心線夾角和曲軸轉速為設計變量。最后利用參數(shù)化建模技術在ADAMS中建立優(yōu)化模型并進行優(yōu)化設計研究,得到了設計變量與目標函數(shù)之間的關系和最優(yōu)解。所得到的結論對壓縮機動力學設計有指導意義。 第四,建立計入運動副摩擦的彈性曲軸的壓縮機主傳動系統(tǒng)動力學優(yōu)化設計數(shù)學模型,該模型以壓縮機機械效率為優(yōu)化目標,以壓縮機氣缸中心線夾角和曲軸轉速為設計變量。利用參數(shù)化建模技術建立ADAMS優(yōu)化模型并進行優(yōu)化設計,得到了設計變量與目標函數(shù)之間的關系和最優(yōu)解。所得到的結論對提高壓縮機機械效率打下了基礎。 第五,利用已有的計入運動副摩擦的彈性曲軸的壓縮機主傳動系統(tǒng)動力學優(yōu)化模型,以兩個主軸承軸頸中心徑向振動響應振幅和機械效率為目標函數(shù),以壓縮機氣缸中心線夾角和曲軸轉速為設計變量進行優(yōu)化研究,通過ADAMS優(yōu)化模塊中優(yōu)化分析,獲得了設計變量與目標函數(shù)之間的關系和最優(yōu)解。所得到的結論對壓縮機動力學設計和改進有指導意義。 最后,總結了本文所作的主要工作及主要創(chuàng)新點,并結合壓縮機主傳動系統(tǒng)基本參數(shù)優(yōu)化問題對今后的研究工作提出展望。
[Abstract]:Taking the main drive system of a W-type piston compressor as the research object, that is, the crankshaft-rolling bearing system as the research object, the dynamic behavior of the main drive system of the piston compressor under rated operating conditions is studied by using ADAMS dynamic simulation software. The dynamic simulation models of the main transmission system of the compressor with rigid crankshaft and the dynamic simulation model of the main transmission system of the compressor with elastic crankshaft are established and solved in ADAMS. The reaction force of the main bearing and the radial vibration response of the journal center of the main bearing under rated conditions are obtained. Secondly, in the dynamic simulation software ADAMS, the dynamic simulation model of the main transmission system of the compressor with elastic crankshaft including the friction of the motion pair is established. The dynamic behavior of the main transmission system of an elastic crankshaft with motion pair friction under rated conditions is studied. The corresponding dynamic parameters and the curve of the friction force on the motion pair are obtained. At the same time, it also reveals the dynamic change rule of compressor mechanical efficiency. The calculation results show that the friction of the moving pair has a significant effect on the main bearing reaction and the center displacement response of the bearing journal. The conclusion can be used to improve the mechanical efficiency and dynamic optimization of the compressor. Thirdly, a mathematical model for the optimal design of the compressor main transmission system with elastic crankshaft is established. The model takes the radial vibration response amplitude of the center of the journal of two main bearings as the objective function, and takes the angle between the center line of the compressor cylinder and the crankshaft speed as the design variables. Finally, the parametric modeling technology is used to establish the optimization model in ADAMS and the optimal design is studied. The relationship between the design variables and the objective function and the optimal solution are obtained. The conclusion can be used to guide the dynamic design of compressor. Fourthly, a mathematical model for the dynamic optimization design of the main transmission system of an elastic crankshaft is established, which takes the mechanical efficiency of the compressor as the optimization objective, and the center line angle of the compressor cylinder and the crankshaft speed as the design variables for the dynamic optimization design of the main transmission system of the compressor. The ADAMS optimization model is established by parametric modeling technology and the optimal design is carried out. The relationship between the design variables and the objective function and the optimal solution are obtained. The conclusion has laid a foundation for improving the mechanical efficiency of the compressor. Fifthly, taking the radial vibration response amplitude and mechanical efficiency of the center of the journal of two main bearings as the objective functions, the dynamic optimization model of the main transmission system of the compressor with elastic crankshaft including the friction of the motion pair is used as the objective function. Taking the center line angle of compressor cylinder and crankshaft speed as design variables, the relationship between the design variables and the objective function and the optimal solution are obtained through the optimization analysis in the ADAMS optimization module. The conclusions obtained are of guiding significance to the design and improvement of compressor dynamics. Finally, the main work and main innovations of this paper are summarized, and the future research work is prospected in the light of the optimization of the basic parameters of the main transmission system of the compressor.
【學位授予單位】：安徽工程大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH457

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