【摘要】：本文基于流體動(dòng)壓潤滑理論,以發(fā)動(dòng)機(jī)燃油泵滑動(dòng)軸承為研究對(duì)象,研究了高速低黏度潤滑劑滑動(dòng)軸承的設(shè)計(jì)與優(yōu)化。主要工作如下：(1) 基于層流潤滑理論和湍流慣性潤滑理論,使用質(zhì)量守恒邊界條件,分別建立了高速低黏度潤滑劑滑動(dòng)軸承在層流條件和湍流條件下的潤滑理論模型,確立了高速低黏度潤滑劑滑動(dòng)軸承潤滑性能計(jì)算的基本過程。(2)計(jì)入潤滑劑黏度與壓力關(guān)系,進(jìn)行了高速低黏度潤滑劑滑動(dòng)軸承潤滑性能分析。分別在兩種潤滑條件下,使用有限差分法和松弛迭代法,計(jì)算考慮黏度變化和不考慮黏度變化的高速低黏度潤滑劑滑動(dòng)軸承性能參數(shù),并且對(duì)計(jì)算結(jié)果進(jìn)行分析和對(duì)比。(3)基于最優(yōu)化設(shè)計(jì)理論,確定燃油泵滑動(dòng)軸承優(yōu)化設(shè)計(jì)過程中設(shè)計(jì)變量、目標(biāo)函數(shù)和約束條件,建立了燃油泵滑動(dòng)軸承優(yōu)化設(shè)計(jì)數(shù)學(xué)模型；選定優(yōu)化設(shè)計(jì)方法和優(yōu)化設(shè)計(jì)中數(shù)據(jù)處理的方法,確定了燃油泵軸承優(yōu)化設(shè)計(jì)過程。(4)基于遺傳算法,以軸承承載力、摩擦功耗、潤滑劑流量和最小油膜厚度為目標(biāo)進(jìn)行了燃油泵滑動(dòng)軸承優(yōu)化設(shè)計(jì)。研究了遺傳算法中參數(shù)的選擇對(duì)優(yōu)化設(shè)計(jì)結(jié)果的影響,并且使用優(yōu)化設(shè)計(jì)的算例進(jìn)行了驗(yàn)證。(5)基于Matlab軟件平臺(tái),編制了燃油泵滑動(dòng)軸承設(shè)計(jì)與優(yōu)化系統(tǒng)軟件。軟件包括燃油泵滑動(dòng)軸承數(shù)據(jù)庫、燃油泵滑動(dòng)軸承性能計(jì)算和優(yōu)化設(shè)計(jì)等功能。軸承數(shù)據(jù)庫軟件可以實(shí)現(xiàn)軸承性能數(shù)據(jù)文件的建立、修改和顯示；軸承性能計(jì)算軟件可以輸入軸承的結(jié)構(gòu)參數(shù),使用數(shù)值解法求解滑動(dòng)軸承的潤滑性能參數(shù),顯示并保存這些數(shù)據(jù)；軸承優(yōu)化設(shè)計(jì)軟件通過讀取軸承數(shù)據(jù)庫內(nèi)建立的軸承數(shù)據(jù),使用遺傳算法等智能算法,對(duì)軸承承載力、潤滑劑流量、最小油膜厚度和摩擦功耗等目標(biāo)進(jìn)行優(yōu)化設(shè)計(jì),顯示并保存優(yōu)化設(shè)計(jì)結(jié)果。在優(yōu)化設(shè)計(jì)過程中可以通過改變算法的參數(shù)來改變優(yōu)化設(shè)計(jì)的速度和結(jié)果精度。(6)使用Matlab/GUI軟件為燃油泵滑動(dòng)軸承設(shè)計(jì)與優(yōu)化系統(tǒng)制作了智能化人工交互界面,制作了用戶注冊和管理界面,方便用戶的管理和使用。
[Abstract]:Based on the theory of hydrodynamic lubrication, the design and optimization of high speed and low viscosity lubricant sliding bearings are studied in this paper. The main works are as follows: (1) based on laminar lubrication theory and turbulent inertial lubrication theory, the lubrication theory models of high speed low viscosity lubricant sliding bearings under laminar flow conditions and turbulent flow conditions are established by using mass conservation boundary conditions. The basic process of lubricating performance calculation of high speed low viscosity lubricant sliding bearing is established. (2) considering the relationship between lubricant viscosity and pressure, the lubrication performance of high speed low viscosity lubricant sliding bearing is analyzed. Under two kinds of lubrication conditions, the performance parameters of high speed low viscosity lubricant sliding bearings with or without viscosity change are calculated by using finite difference method and relaxation iteration method. And the calculation results are analyzed and compared. (3) based on the optimization design theory, the design variables, objective functions and constraints in the optimization design process of fuel pump sliding bearings are determined. The mathematical model of optimum design of fuel pump sliding bearing is established. The optimization design method and data processing method in optimization design are selected, and the optimal design process of fuel pump bearing is determined. (4) based on genetic algorithm, bearing capacity, friction power consumption, The optimum design of fuel pump sliding bearing was carried out with the aim of lubricant flow and minimum oil film thickness. The influence of parameter selection in genetic algorithm on the optimal design results is studied and verified by an example of optimal design. (5) based on the Matlab software platform, the design and optimization system software of fuel pump sliding bearing is developed. The software includes fuel pump sliding bearing database, performance calculation and optimization design of fuel pump sliding bearing. Bearing database software can realize the establishment, modification and display of bearing performance data file. The bearing performance calculation software can input the structural parameters of the bearing and use the numerical solution to solve the lubricating performance parameters of the sliding bearing and display and save these data. By reading the bearing data from the bearing database and using intelligent algorithms such as genetic algorithm, the bearing capacity, lubricant flow rate, minimum oil film thickness and friction power consumption are optimized by the bearing optimization design software. Display and save optimized design results. In the process of optimization design, the speed and precision of the optimization design can be changed by changing the parameters of the algorithm. (6) the intelligent interactive interface is made for the design and optimization system of fuel pump sliding bearing by using Matlab/GUI software. A user registration and management interface is developed to facilitate the management and use of users.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TH133.31

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