發(fā)布時間：2018-06-20 22:58

  本文選題：齒輪傳動 + 多指標(biāo)約束��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著石油工業(yè)的不斷發(fā)展,泥漿泵在油田開采中得到了廣泛應(yīng)用,齒輪傳動機(jī)構(gòu)作為連接原動機(jī)和動力端(泥漿泵)的設(shè)備起著舉足輕重的作用。工程實(shí)際中,泥漿泵工作環(huán)境惡劣、震動沖擊嚴(yán)重、傳動功率較大,這就要求研究人員在設(shè)計(jì)齒輪傳動機(jī)構(gòu)時需充分考慮其工作可靠性和實(shí)用性。隨著齒輪傳動優(yōu)化設(shè)計(jì)理論研究的不斷深入,發(fā)現(xiàn)常規(guī)可靠性優(yōu)化設(shè)計(jì)中廣泛地存在著隨機(jī)因素和模糊因素,并且有實(shí)驗(yàn)驗(yàn)證模糊因素對設(shè)計(jì)結(jié)果有著較大的影響。齒輪的潤滑問題是影響其工作性能的重要因素,在潤滑問題的討論中潤滑油膜厚度受到較為廣泛的關(guān)注,一些國際組織和機(jī)構(gòu)也致力于將彈流油膜厚度計(jì)算納入到齒輪傳動的設(shè)計(jì)中。同時為提高齒輪傳動的效率,降低其動載荷和動應(yīng)力,需運(yùn)用振動理論,在靜態(tài)優(yōu)化模型中引入動態(tài)性能指標(biāo)。針對以上問題,本文以模糊數(shù)學(xué)為基礎(chǔ),將可靠性理論與優(yōu)化設(shè)計(jì)方法相結(jié)合,以泥漿泵齒輪傳動機(jī)構(gòu)為對象,開展在多指標(biāo)約束下的模糊可靠性優(yōu)化設(shè)計(jì)研究,并基于熵權(quán)法和層次分析法對齒輪傳動系統(tǒng)的設(shè)計(jì)質(zhì)量進(jìn)行模糊綜合評判,主要研究工作如下:(1)全面分析影響齒輪傳動性能的因素,探討斜齒輪及弧線圓錐齒輪的體積計(jì)算方法,以體積最小為目標(biāo)函數(shù),選取相互獨(dú)立且可控制的設(shè)計(jì)參數(shù)作為自變量,考慮最小油膜厚度、臨界轉(zhuǎn)速比的影響,根據(jù)可靠性理論,建立齒輪傳動機(jī)構(gòu)可靠性優(yōu)化設(shè)計(jì)數(shù)學(xué)模型。(2)結(jié)合模糊數(shù)學(xué)理論,研究分析模糊約束轉(zhuǎn)換方法,選取合適的隸屬函數(shù)對模糊約束條件進(jìn)行轉(zhuǎn)化,并運(yùn)用二級模糊綜合評判法求解最優(yōu)水平截集值,得到經(jīng)過轉(zhuǎn)化的普通約束條件,為下一步優(yōu)化設(shè)計(jì)模型的求解打下基礎(chǔ)。(3)根據(jù)所建模型特點(diǎn),選取合適的優(yōu)化設(shè)計(jì)求解方法,探討離散型自變量處理的問題。通過運(yùn)用Matlab遺傳算法編程技術(shù),對優(yōu)化設(shè)計(jì)模型進(jìn)行求解,并對所求結(jié)果進(jìn)行分析。(4)深入探討設(shè)計(jì)質(zhì)量評價方法,基于熵值法和層次分析法,將定性、定量分析有效結(jié)合,對泥漿泵齒輪傳動機(jī)構(gòu)設(shè)計(jì)質(zhì)量進(jìn)行科學(xué)的、系統(tǒng)的模糊綜合評價。經(jīng)過上述研究,不僅使齒輪傳動機(jī)構(gòu)的體積減小,而且其可靠度、潤滑指標(biāo)、動態(tài)性能指標(biāo)都得到了合理改善,實(shí)例分析證明了優(yōu)化方法的正確性、合理性。
[Abstract]:With the continuous development of petroleum industry mud pump has been widely used in oil field exploitation. Gear drive mechanism plays an important role as the equipment connecting the prime mover and the power end (mud pump). In engineering practice, the working environment of mud pump is bad, the vibration shock is serious, and the transmission power is large, which requires researchers to fully consider its reliability and practicability when designing the gear transmission mechanism. With the development of the theory of gear transmission optimal design, it is found that there are random factors and fuzzy factors in the conventional reliability optimization design, and the fuzzy factors have great influence on the design results. The lubrication problem of gears is an important factor affecting its working performance. In the discussion of lubrication problem, the thickness of lubricating oil film is paid more and more attention. Some international organizations and institutions also work to incorporate the calculation of EHL film thickness into the design of gear transmission. At the same time, in order to improve the efficiency of gear transmission and reduce the dynamic load and stress, the dynamic performance index should be introduced into the static optimization model by using vibration theory. Aiming at the above problems, this paper, based on fuzzy mathematics, combines reliability theory with optimization design method, and takes gear drive mechanism of mud pump as an object to carry out fuzzy reliability optimization design under multi-index constraints. Based on the entropy weight method and the analytic hierarchy process, the design quality of the gear transmission system is evaluated by fuzzy comprehensive evaluation. The main research work is as follows: 1) the factors affecting the gear transmission performance are analyzed comprehensively. The volume calculation method of helical gear and arc bevel gear is discussed. The minimum volume is taken as the objective function, the independent and controllable design parameters are chosen as independent variables, and the effects of minimum oil film thickness and critical speed ratio are considered. According to the reliability theory, the mathematical model of reliability optimization design of gear transmission mechanism is established. (2) combined with fuzzy mathematics theory, the fuzzy constraint conversion method is studied and analyzed, and the appropriate membership function is selected to transform the fuzzy constraint condition. By using the two-level fuzzy comprehensive evaluation method to solve the optimal horizontal cut set value, the transformed general constraint conditions are obtained, which lay the foundation for the solution of the next optimal design model. (3) according to the characteristics of the established model, the appropriate optimization design solution method is selected. The problem of discrete independent variable processing is discussed. By using Matlab genetic algorithm programming technology, the optimization design model is solved, and the result is analyzed. The evaluation method of design quality is deeply discussed. Based on entropy method and analytic hierarchy process, the qualitative and quantitative analysis are effectively combined. The design quality of gear transmission mechanism of mud pump is evaluated scientifically and systematically. Through the above research, not only the volume of gear transmission mechanism is reduced, but also its reliability, lubrication index and dynamic performance index are improved reasonably. The example analysis proves the correctness and rationality of the optimization method.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH132.41

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 王曉軍;王磊;賈曉;邱志平;;基于非概率凸模型可靠性的結(jié)構(gòu)優(yōu)化設(shè)計(jì)[J];北京航空航天大學(xué)學(xué)報(bào);2012年05期

2 陳國宏,陳衍泰,李美娟;組合評價系統(tǒng)綜合研究[J];復(fù)旦學(xué)報(bào)(自然科學(xué)版);2003年05期

3 秦大同;;國際齒輪傳動研究現(xiàn)狀[J];重慶大學(xué)學(xué)報(bào);2014年08期

4 張海濤;;應(yīng)用混合遺傳算法的汽車主減速器優(yōu)化設(shè)計(jì)[J];機(jī)械傳動;2010年02期

5 秦大同;邢子坤;王建宏;;基于動力學(xué)和可靠性的風(fēng)力發(fā)電齒輪傳動系統(tǒng)參數(shù)優(yōu)化設(shè)計(jì)[J];機(jī)械工程學(xué)報(bào);2008年07期

6 吳冬敏;芮延年;沈銘;;粒子群-蟻群融合算法在曝氣機(jī)減速器優(yōu)化設(shè)計(jì)中的應(yīng)用[J];機(jī)械傳動;2015年01期

7 周娜;張義民;;圓錐齒輪可靠性分析的參數(shù)靈敏度[J];中國機(jī)械工程;2008年21期

相關(guān)碩士學(xué)位論文 前1條

1 葉丹;基于剛?cè)狁詈蟿恿W(xué)的泥漿泵動力端疲勞壽命預(yù)測與參數(shù)優(yōu)化[D];重慶交通大學(xué);2014年

，

本文編號：2046002