發(fā)布時間：2018-04-18 02:18

  本文選題：液黏傳動 + 雙圓弧油槽　； 參考：《太原理工大學(xué)》2017年碩士論文

【摘要】：為了滿足刮板輸送機平穩(wěn)啟動與可靠運行的需求,延長相關(guān)機械設(shè)備的使用壽命,可控啟動裝置廣泛運用于煤礦綜采裝備中�？煽貑友b置的核心部分是液黏傳動裝置。雙圓弧油槽摩擦副對液黏傳動裝置的流場特性與轉(zhuǎn)矩特性影響顯著。但當考慮油槽結(jié)構(gòu)參數(shù)時,摩擦副間流場的數(shù)值模擬過程繁瑣且重復(fù)性強,所以針對雙圓弧油槽參數(shù)對轉(zhuǎn)矩特性研究甚少,因此有必要尋找一種經(jīng)濟準確的研究方法,對雙圓弧油槽結(jié)構(gòu)參數(shù)進行準確研究的同時,輔助摩擦副的設(shè)計。本文研究了雙圓弧油槽參數(shù)對液黏傳動輸出轉(zhuǎn)矩的影響,利用多學(xué)科優(yōu)化軟件iSIGHT建立了集油槽結(jié)構(gòu)參數(shù)化設(shè)計、流場數(shù)值模擬、試驗設(shè)計與參數(shù)優(yōu)化為一體的油槽參數(shù)優(yōu)化平臺,以改善液黏傳動裝置轉(zhuǎn)矩特性,優(yōu)化了雙圓弧油槽結(jié)構(gòu)參數(shù)。推導(dǎo)分析了純油膜剪切階段油膜剪切轉(zhuǎn)矩與油液沖擊轉(zhuǎn)矩的形成機理,建立了液黏傳動輸出轉(zhuǎn)矩的數(shù)學(xué)模型。分析了液黏傳動摩擦副雙圓弧油槽寬度、油槽對數(shù)、偏心距、內(nèi)圈偏心圓直徑與油槽深度對液黏傳動裝置輸出轉(zhuǎn)矩的影響。結(jié)果表明:在純油膜階段液黏傳動輸出轉(zhuǎn)矩主要由油膜剪切作用產(chǎn)生的剪切轉(zhuǎn)矩與油液沖擊轉(zhuǎn)矩組成。油槽寬度減小、油槽對數(shù)降低、偏心圓內(nèi)圈直徑減少、偏心距增大都可以使液黏傳動的輸出轉(zhuǎn)矩增大;而油槽深度變化會使液黏傳動裝置輸出轉(zhuǎn)矩產(chǎn)生波動。利用正交數(shù)組進行試驗設(shè)計,建立了RSM響應(yīng)曲面近似模型,探究了各個參數(shù)的敏感性、主效應(yīng)與交互效應(yīng)。偏心距與內(nèi)圈偏心圓直徑是影響液黏傳動輸出轉(zhuǎn)矩的敏感因素,且兩者間具有較強的交互作用。利用ASA算法模擬了退火過程,以提高液黏傳動裝置輸出轉(zhuǎn)矩為優(yōu)化目標對雙圓弧油槽參數(shù)進行了優(yōu)化,尋找出油槽參數(shù)的最佳配置。集CAD參數(shù)化建模、CFX流場數(shù)值模擬、DOE試驗設(shè)計、RSM近似模型與ASA模擬退火算法為一體的iSIGHT油槽參數(shù)分析優(yōu)化平臺,可以大大減少計算代價,提高設(shè)計效率,為液黏傳動裝置摩擦副油槽設(shè)計提供一種可行的方法與理論基礎(chǔ)。
[Abstract]:In order to meet the need of smooth start and reliable operation of scraper conveyor and prolong the service life of related machinery and equipment, controllable starting device is widely used in fully mechanized mining equipment of coal mine.The core part of the controllable starting device is the fluid-viscosity drive.The friction pair of double circular arc oil grooves has a significant effect on the flow field and torque characteristics of the fluid viscosity transmission.But when considering the structural parameters of the oil tank, the numerical simulation process of the flow field between the friction pairs is cumbersome and repetitive, so there is little research on the torque characteristics of the double-arc oil tank parameters, so it is necessary to find an economical and accurate research method.At the same time, the design of friction pair is aided while the structural parameters of double arc oil tank are studied accurately.In this paper, the influence of double circular arc oil tank parameters on the output torque of fluid viscosity transmission is studied. The parametric design of the oil tank structure and the numerical simulation of the flow field are established by using the multidisciplinary optimization software iSIGHT.In order to improve the torque characteristics of the hydraulic viscous transmission device and optimize the structural parameters of the double circular arc oil tank, the oil tank parameter optimization platform is designed and optimized.The forming mechanism of oil film shearing torque and oil liquid impact torque in pure oil film shearing stage is deduced and analyzed, and the mathematical model of hydraulic viscosity transmission output torque is established.The effects of the width, logarithm, eccentricity, diameter of inner ring eccentric circle and depth of oil groove on the output torque of hydraulic viscosity transmission are analyzed.The results show that the output torque of fluid viscosity transmission in pure oil film stage is mainly composed of shearing torque produced by oil film shearing and oil liquid impact torque.The width of oil tank decreases logarithm of oil tank decreases the diameter of inner ring of eccentric circle decreases and eccentricity increases the output torque of fluid viscosity transmission while the variation of oil tank depth will cause the output torque of fluid viscosity transmission to fluctuate.An approximate model of RSM response surface is established by using orthogonal array, and the sensitivity, main effect and interaction effect of each parameter are discussed.Eccentricity and inner ring eccentricity circle diameter are the sensitive factors that affect the output torque of fluid viscosity transmission, and there is a strong interaction between them.The annealing process is simulated by ASA algorithm. The parameters of double circular arc oil tank are optimized with the aim of improving the output torque of fluid viscosity transmission. The optimal configuration of the tank parameters is found.CAD parameterized modeling and numerical simulation of CFX flow field the CAD approximate model and ASA simulated annealing algorithm are integrated into a iSIGHT oil tank parameter analysis and optimization platform, which can greatly reduce the calculation cost and improve the design efficiency.It provides a feasible method and theoretical basis for the design of the oil groove of the friction pair of the fluid viscosity transmission device.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD528.3

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