【摘要】：以某W型活塞式壓縮機(jī)主傳動(dòng)系統(tǒng)為研究對(duì)象,即曲軸-滾動(dòng)軸承系統(tǒng)為研究對(duì)象,利用ADAMS動(dòng)力學(xué)仿真軟件,研究了額定工況作用下活塞式壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)行為。在ADAMS中分別建立剛性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)仿真模型和彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)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(dòng)響應(yīng)。 其次,在動(dòng)力學(xué)仿真軟件ADAMS中,建立計(jì)入運(yùn)動(dòng)副摩擦的彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)仿真模型,研究額定工況作用下計(jì)入運(yùn)動(dòng)副摩擦的彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)行為。得到了相應(yīng)的動(dòng)力學(xué)參數(shù)及運(yùn)動(dòng)副上摩擦力的變化曲線。同時(shí)也揭示出壓縮機(jī)機(jī)械效率的動(dòng)態(tài)變化規(guī)律。計(jì)算結(jié)果表明運(yùn)動(dòng)副摩擦對(duì)主軸承反力、軸承軸頸中心位移響應(yīng)有顯著影響。所得到的結(jié)論對(duì)提高壓縮機(jī)的機(jī)械效率和動(dòng)力學(xué)優(yōu)化提供了前提條件。 第三,建立彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)優(yōu)化設(shè)計(jì)數(shù)學(xué)模型,該模型以兩個(gè)主軸承軸頸中心徑向振動(dòng)響應(yīng)振幅為目標(biāo)函數(shù),以壓縮機(jī)氣缸中心線夾角和曲軸轉(zhuǎn)速為設(shè)計(jì)變量。最后利用參數(shù)化建模技術(shù)在ADAMS中建立優(yōu)化模型并進(jìn)行優(yōu)化設(shè)計(jì)研究,得到了設(shè)計(jì)變量與目標(biāo)函數(shù)之間的關(guān)系和最優(yōu)解。所得到的結(jié)論對(duì)壓縮機(jī)動(dòng)力學(xué)設(shè)計(jì)有指導(dǎo)意義。 第四,建立計(jì)入運(yùn)動(dòng)副摩擦的彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)優(yōu)化設(shè)計(jì)數(shù)學(xué)模型,該模型以壓縮機(jī)機(jī)械效率為優(yōu)化目標(biāo),以壓縮機(jī)氣缸中心線夾角和曲軸轉(zhuǎn)速為設(shè)計(jì)變量。利用參數(shù)化建模技術(shù)建立ADAMS優(yōu)化模型并進(jìn)行優(yōu)化設(shè)計(jì),得到了設(shè)計(jì)變量與目標(biāo)函數(shù)之間的關(guān)系和最優(yōu)解。所得到的結(jié)論對(duì)提高壓縮機(jī)機(jī)械效率打下了基礎(chǔ)。 第五,利用已有的計(jì)入運(yùn)動(dòng)副摩擦的彈性曲軸的壓縮機(jī)主傳動(dòng)系統(tǒng)動(dòng)力學(xué)優(yōu)化模型,以兩個(gè)主軸承軸頸中心徑向振動(dòng)響應(yīng)振幅和機(jī)械效率為目標(biāo)函數(shù),以壓縮機(jī)氣缸中心線夾角和曲軸轉(zhuǎn)速為設(shè)計(jì)變量進(jìn)行優(yōu)化研究,通過ADAMS優(yōu)化模塊中優(yōu)化分析,獲得了設(shè)計(jì)變量與目標(biāo)函數(shù)之間的關(guān)系和最優(yōu)解。所得到的結(jié)論對(duì)壓縮機(jī)動(dòng)力學(xué)設(shè)計(jì)和改進(jìn)有指導(dǎo)意義。 最后,總結(jié)了本文所作的主要工作及主要?jiǎng)?chuàng)新點(diǎn),并結(jié)合壓縮機(jī)主傳動(dòng)系統(tǒng)基本參數(shù)優(yōu)化問題對(duì)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(xué)位授予單位】：安徽工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TH457

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