發(fā)布時(shí)間：2018-01-10 04:17

  本文關(guān)鍵詞：節(jié)點(diǎn)外嚙合行星輪系耦合動(dòng)力學(xué)分析及試驗(yàn)驗(yàn)證　出處：《南京航空航天大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 節(jié)點(diǎn)外嚙合 行星輪系 耦合動(dòng)力學(xué) 驗(yàn)證試驗(yàn)

【摘要】：行星齒輪傳動(dòng)系統(tǒng)利用多個(gè)行星輪有效實(shí)現(xiàn)了功率分流,同時(shí)輸入、輸出軸同軸,因此與定軸輪系相比,具有傳動(dòng)比大、承載能力強(qiáng)、傳動(dòng)效率高等優(yōu)點(diǎn),在工業(yè)領(lǐng)域的多個(gè)行業(yè)內(nèi)有著廣泛應(yīng)用。節(jié)點(diǎn)外嚙合齒輪傳動(dòng)相比于普通齒輪傳動(dòng),由于實(shí)際嚙合線位于節(jié)點(diǎn)一側(cè),避免了嚙合過(guò)程中齒面摩擦力換向引起的沖擊振動(dòng),可以改善系統(tǒng)的振動(dòng)特性。為了更全面地了解節(jié)點(diǎn)外嚙合行星輪系的動(dòng)態(tài)特性,本文圍繞其耦合動(dòng)力學(xué)特性開(kāi)展了以下研究工作:(1)以向心球軸承為研究對(duì)象,論述了基于Hertz接觸理論的滾動(dòng)軸承載荷與徑向變形的關(guān)系,由此得到了軸承時(shí)變支承剛度的計(jì)算式�；贏NSYS Workbench對(duì)向心球軸承進(jìn)行了接觸仿真,并將有限元仿真解與理論分析解進(jìn)行了對(duì)比。(2)根據(jù)時(shí)變支承剛度建立了齒輪-軸承耦合關(guān)系,進(jìn)而采用集中參數(shù)法建立了更為完善的節(jié)點(diǎn)外嚙合行星齒輪傳動(dòng)系統(tǒng)動(dòng)力學(xué)模型,分析了齒輪副嚙合剛度、阻尼,構(gòu)件扭轉(zhuǎn)剛度、阻尼,齒面摩擦力的計(jì)算。根據(jù)牛頓運(yùn)動(dòng)定律推導(dǎo)了系統(tǒng)動(dòng)力學(xué)微分方程組并探討了微分方程的解法。(3)利用Rung-Kutta數(shù)值積分法求解系統(tǒng)動(dòng)力學(xué)方程,得到了軸承時(shí)變支承剛度和系統(tǒng)動(dòng)力學(xué)響應(yīng),研究了時(shí)變支承剛度對(duì)系統(tǒng)振動(dòng)特性的影響規(guī)律。基于ADAMS軟件對(duì)系統(tǒng)進(jìn)行了運(yùn)動(dòng)仿真,直觀地掌握了系統(tǒng)運(yùn)轉(zhuǎn)特性。(4)利用1000kW機(jī)械功率封閉試驗(yàn)臺(tái)開(kāi)展了驗(yàn)證試驗(yàn),制訂了試驗(yàn)方案,測(cè)量得到了不同工況條件下的振動(dòng)信號(hào)�；谛〔ㄗ儞Q對(duì)試驗(yàn)信號(hào)進(jìn)行時(shí)頻分析,得到了去噪信號(hào),進(jìn)而驗(yàn)證了理論分析解的正確性。
[Abstract]:Planetary gear transmission system using a plurality of planetary gear effectively realizes the power split, at the same time, input, output shaft coaxial, so compared with the fixed axis gear train has large transmission ratio, strong carrying capacity, high transmission efficiency advantages, a number of industries in the industrial field has wide application. The node external gearing compared to ordinary gear transmission, due to the actual meshing line on one side of the joints, to avoid impact vibration during the meshing gear tooth friction force commutation, the vibration characteristics of the system can be improved. In order to fully understand the dynamic characteristics of node external gearing planetary gear train, this paper carried out the following research work focuses on the coupling dynamics: (1) the ball bearing as the research object, discusses the contact relationship between the load bearing and the radial deformation based on the theory of Hertz, which has been bearing time-varying stiffness calculation. Based on ANSYS W Orkbench simulation of contact ball bearings, and finite element simulation solutions were compared with the theoretical analysis. (2) according to the time-varying stiffness of gear was built - bearing coupling relationship, and establish a more dynamic node external gearing planetary gear transmission system model improved by lumped parameter method of meshing gear the stiffness, damping analysis, damping stiffness, torsional component, calculation of gear tooth friction force. According to Newton's law of motion of the system is deduced dynamic differential equations and discusses the solution of the differential equation. (3) using Rung-Kutta numerical integration method to solve the dynamic equations of the system, the bearing support stiffness and dynamic response variable system of time varying stiffness influence on the vibration characteristics of the system. ADAMS software system based on motion simulation, intuitively grasp the running characteristic of the system. (4) by 1000kW The verification test is carried out for the mechanical power closed test rig, and the test scheme is worked out. The vibration signals under different working conditions are measured. The time-frequency analysis of the test signal is achieved based on wavelet transform, and the denoising signal is obtained, which further verifies the correctness of the theoretical analysis.

【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TH132.41

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