發(fā)布時間：2018-05-13 20:56

  本文選題：齒輪嚙合 + 靜態(tài)接觸分析��； 參考：《大連理工大學(xué)》2012年碩士論文

【摘要】：風(fēng)電行業(yè)極大發(fā)展,而風(fēng)電是技術(shù)密集型產(chǎn)業(yè),面對全球技術(shù)競爭,國內(nèi)的制造商和研究者正積極合作研究掌握核心技術(shù),本課題組承擔(dān)“7MW級風(fēng)電機組及關(guān)鍵部件設(shè)計和產(chǎn)業(yè)化技術(shù)”國家科技支撐計劃。本論文主要研究齒輪系統(tǒng)制造安裝等幾何精度對傳遞誤差、時變嚙合剛度等傳動性能的影響,并提出行星輪系均載的分析方法與措施。具體研究內(nèi)容如下： 提出基于ANSYS彈性接觸的齒輪副時變嚙合剛度和傳遞誤差的研究方法。通過關(guān)鍵點-節(jié)點-單元建立完整的齒輪模型,并對接觸區(qū)的節(jié)點重構(gòu)方法細(xì)化單元以提高計算精度,完成一個嚙合周期的準(zhǔn)靜態(tài)載荷分配、傳遞誤差等傳動性能分析,特別是嚙合剛度研究。為提高齒輪系統(tǒng)的有限元求解能力、嵌套誤差的計算效率和非線性接觸算法的求解速度,應(yīng)用子結(jié)構(gòu)技術(shù)建模。 研究齒輪制造安裝精度和支承剛度對齒輪副嚙合剛度和傳遞誤差等傳動性能影響。一方面總結(jié)其對傳遞誤差的定量影響規(guī)律,另一方面為在行星輪系系統(tǒng)模型中嵌入各因素提供參考。具體分別通過齒輪齒廓接觸區(qū)節(jié)點重構(gòu)、編制宏命令實現(xiàn)齒輪節(jié)點移動或轉(zhuǎn)動、在齒輪導(dǎo)向節(jié)點處建立水平垂直方向的彈簧單元的方法實現(xiàn)在有限元力學(xué)模型中嵌入齒輪制造安裝精度和支承剛度。 研究并建立齒輪副和行星輪系的傳遞誤差數(shù)學(xué)模型,以及根據(jù)幾何精度統(tǒng)計規(guī)律的齒輪精度設(shè)計。全面分析齒輪單項誤差構(gòu)成的制造固有誤差、裝配誤差的中心距偏差和軸線不平行度偏差、支撐系統(tǒng)和齒輪的彈性變形對齒輪副傳遞誤差的定量數(shù)學(xué)關(guān)系。根據(jù)齒輪副系統(tǒng)各幾何精度的統(tǒng)計規(guī)律,建立以單項幾何精度為參數(shù)的傳遞誤差計算式,并對設(shè)計方案作預(yù)估計。 研究并建立考慮各支路傳遞誤差、配合間隙、浮動、彈性支承、初相位的時變嚙合剛度等因素的靜力學(xué)均載系數(shù)計算模型。在此基礎(chǔ)上,應(yīng)用Matlab編程語言對數(shù)學(xué)模型進(jìn)行數(shù)值求解,對各支路的嚙合情況判斷和構(gòu)件裝配間隙與浮動采取特殊計算策略,討論制造安裝誤差、支承剛度、嚙合剛度、載荷等參數(shù)對均載的敏感性,并對傳統(tǒng)浮動方式進(jìn)行研究,確定了各構(gòu)件制造安裝偏心對浮動構(gòu)件的浮動量和軌跡要求,并研究行星輪柔性支撐方式實現(xiàn)均載。 本文重點研究建立了基于系統(tǒng)幾何精度的齒輪副傳遞誤差模型和行星輪系均載靜力學(xué)模型,為具體齒輪精度設(shè)計和均載設(shè)計提供理論依據(jù)和方法。
[Abstract]:The wind power industry has greatly developed, and wind power is a technology-intensive industry. In the face of global technological competition, domestic manufacturers and researchers are actively cooperating to study and master core technologies. Our group is responsible for the National Science and Technology support Plan for the Design and industrialization Technology of 7MW Wind turbines and key components. In this paper, the effect of geometric precision such as manufacturing and installation of gear system on transmission error, time-varying meshing stiffness and other transmission performance is studied, and the analysis methods and measures for the uniform load of planetary gear train are put forward. The specific contents of the study are as follows: This paper presents a method to study the time-varying meshing stiffness and transfer error of gear pair based on ANSYS elastic contact. A complete gear model is established by the key point-node-element method, and the method of reconstructing the node in the contact area is used to refine the element to improve the accuracy of the calculation, to complete the quasi-static load distribution of a meshing period, and to analyze the transmission performance of the transmission error. Especially the study of meshing stiffness. In order to improve the finite element solution ability of gear system, the calculation efficiency of nesting error and the solving speed of nonlinear contact algorithm, the substructure technique is used to model the gear system. The effects of gear manufacturing installation accuracy and supporting stiffness on transmission performance such as gear pair meshing stiffness and transmission error are studied. On the one hand, it summarizes its quantitative influence on the transfer error, on the other hand, it provides a reference for embedding various factors in the planetary gear train system model. By reconstructing the nodes in the contact region of gear profile, the macro commands are compiled to realize the movement or rotation of the gear nodes. The method of establishing horizontal and vertical spring element at the gear guide node can embed the gear manufacturing installation accuracy and supporting stiffness into the finite element mechanical model. The mathematical model of transmission error between gear pair and planetary gear train is studied and established, and the gear precision design according to the statistical law of geometric accuracy is also studied. In this paper, the inherent manufacturing error of gear single error, the deviation of center distance and nonparallelism of assembly error, and the quantitative mathematical relationship between the transmission error of gear pair and the elastic deformation of supporting system and gear are analyzed. According to the statistical law of the geometric accuracy of gear pair system, the transfer error calculation formula with single geometric precision as the parameter is established, and the design scheme is pre-estimated. The calculation model of static load equalization coefficient is established which takes into account the transmission error of each branch, the matching gap, the floating, the elastic support, the time-varying meshing stiffness of the initial phase, and so on. On this basis, the mathematical model is numerically solved by using Matlab programming language. Special calculation strategies are adopted for judging the meshing situation of each branch and for assembly clearance and floating of components. The manufacturing installation error, support stiffness, meshing stiffness are discussed. The sensitivity of load and other parameters to the load equalization is studied, and the traditional floating mode is studied. The floating quantity and trajectory of the floating member are determined by the eccentricity of the manufacturing and installation of each component, and the load equalization of the flexible bracing mode of the planetary wheel is studied. In this paper, the transmission error model of gear pair based on geometric precision of the system and the statics model of planetary gear train are established, which provide the theoretical basis and method for the precision design and load sharing design of the specific gear.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH132.41

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 田磊;行星傳動的均載分析與疲勞壽命預(yù)測[D];吉林大學(xué);2013年

2 喬福瑞;基于ANSYS的齒輪接觸應(yīng)力與嚙合剛度研究[D];大連理工大學(xué);2013年

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本文編號：1884765