發(fā)布時(shí)間：2018-03-13 04:30

  本文選題：斜撐式超越離合器　切入點(diǎn)：楔合過(guò)程　出處：《哈爾濱工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：斜撐式超越離合器是直升機(jī)傳動(dòng)系統(tǒng)的關(guān)鍵部件,其優(yōu)良程度對(duì)飛機(jī)的性能及可靠性有著至關(guān)重要的影響。隨著航空飛行器不斷朝高速重載的方向發(fā)展,對(duì)超越離合器的強(qiáng)度以及動(dòng)態(tài)性能的要求也越來(lái)越高。而國(guó)內(nèi)在這兩方面的研究?jī)?nèi)容開(kāi)展較少。本文選取斜撐式超越離合器為研究對(duì)象,以其楔合過(guò)程的接觸分析和動(dòng)態(tài)測(cè)試為主要研究?jī)?nèi)容開(kāi)展研究。首先基于經(jīng)典楔塊接觸角計(jì)算公式及赫茲接觸相關(guān)理論模型,通過(guò)Matlab編程迭代計(jì)算其靜態(tài)接觸力及接觸應(yīng)力,對(duì)離合器進(jìn)行強(qiáng)度校核;基于ANSYS Workbench建立斜撐式離合器的幾何模型及有限元模型,開(kāi)展靜態(tài)接觸的有限元分析。并對(duì)迭代計(jì)算結(jié)果與有限元仿真結(jié)果的進(jìn)行對(duì)比,開(kāi)展有限元仿真方法的收斂性分析,探討研究圓弧數(shù)對(duì)仿真結(jié)果的影響。然后基于LS-DYNA對(duì)斜撐式離合器進(jìn)行動(dòng)態(tài)接觸分析。建立斜撐式離合器幾何模型及有限元模型,通過(guò)計(jì)算和分析楔合過(guò)程中輸出軸速度變化、楔塊與內(nèi)外環(huán)接觸力變化以及楔塊與內(nèi)外環(huán)之間最大接觸力的分布狀況,探討研究摩擦系數(shù)和帶狀彈簧剛度對(duì)離合器動(dòng)態(tài)接觸特性的影響。再根據(jù)接觸分析結(jié)果,提出離合器動(dòng)態(tài)測(cè)試試驗(yàn)原理,對(duì)試驗(yàn)臺(tái)機(jī)械系統(tǒng)、信號(hào)采集與控制系統(tǒng)進(jìn)行方案設(shè)計(jì),并完成試驗(yàn)臺(tái)加工、裝配與調(diào)試,解決機(jī)械結(jié)構(gòu)設(shè)計(jì)及裝配難點(diǎn),解決機(jī)械系統(tǒng)集中稀油潤(rùn)滑及密封問(wèn)題,確保試驗(yàn)臺(tái)的同軸度及水平度。最后開(kāi)展離合器動(dòng)態(tài)性能試驗(yàn),測(cè)試離合器阻力矩及輸出軸的楔合速度曲線,以驗(yàn)證動(dòng)態(tài)接觸分析結(jié)果,獲取離合器動(dòng)態(tài)性能參數(shù)。
[Abstract]:Oblique brace overrunning clutch is the key component of helicopter transmission system, and its excellent degree has a vital influence on the performance and reliability of aircraft. The demands on the strength and dynamic performance of overrunning clutch are more and more high, but the research contents of these two aspects are less in China. In this paper, the oblique brace overrunning clutch is chosen as the research object. In this paper, the contact analysis and dynamic measurement of the wedge process are taken as the main research contents. Firstly, based on the classical wedge contact angle formula and Hertz contact theory model, the static contact force and contact stress are calculated iteratively by Matlab programming. Based on ANSYS Workbench, the geometric model and finite element model of oblique brace clutch are established, and the static contact finite element analysis is carried out. The iterative calculation results are compared with the finite element simulation results. The convergence analysis of finite element simulation method is carried out to study the influence of arc number on the simulation results. Then the dynamic contact analysis of skew braced clutch based on LS-DYNA is carried out. The geometric model and finite element model of skew braced clutch are established. Through the calculation and analysis of the velocity change of the output shaft, the contact force between the wedge and the inner and outer ring and the distribution of the maximum contact force between the wedge and the inner and outer ring, The effects of friction coefficient and strip spring stiffness on the dynamic contact characteristics of clutch are studied. Based on the results of contact analysis, the principle of clutch dynamic test is put forward. The signal acquisition and control system is designed, and the test bed is processed, assembled and debugged, the difficulties of mechanical structure design and assembly are solved, and the problems of concentrated thin oil lubrication and sealing of mechanical system are solved. Finally, the clutch dynamic performance test was carried out to test the clutch resistance moment and the wedge velocity curve of the output shaft to verify the dynamic contact analysis results and obtain the clutch dynamic performance parameters.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：V229;V275.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 王大力,孫立明,單服兵,徐浩;ANSYS在求解軸承接觸問(wèn)題中的應(yīng)用[J];軸承;2002年09期

2 曲秀全,陸念力,車仁煒;超越離合器綜述[J];機(jī)械傳動(dòng);2005年01期

3 嚴(yán)宏志;楊兵;胡魁賢;譚援強(qiáng);;單圓弧PCE型離合器楔合過(guò)程力學(xué)特性分析[J];煤炭學(xué)報(bào);2010年06期

4 朱楚;朱如鵬;靳廣虎;;對(duì)斜撐超越離合器力學(xué)性能的影響分析[J];機(jī)械制造與自動(dòng)化;2012年05期

相關(guān)碩士學(xué)位論文 前1條

1 陳榮軍;基于LabVIEW高速滾珠絲杠綜合性能動(dòng)態(tài)測(cè)試系統(tǒng)設(shè)計(jì)與分析[D];南京理工大學(xué);2008年

，

本文編號(hào)：1604832