本文關鍵詞：QRJ-150型空壓機曲軸斷裂失效分析與結(jié)構改進　出處：《南京航空航天大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 曲軸 漸開線花鍵軸 運動仿真 有限元 ANASYS Workbench

【摘要】：空氣壓縮機作為“通用機械”被廣泛應用在國民經(jīng)濟和國防建設當中，尤其是微型高壓空氣壓縮機更是飛機、坦克、輪船的氣動操縱系統(tǒng)不可或缺的核心部件。一段時間以來，中航工業(yè)宏光空降裝備有限公司發(fā)現(xiàn)他們使用的QRJ-150和KY-8等相近型號的其他高壓活塞式空氣壓縮機在使用過程中經(jīng)常發(fā)生曲軸花鍵軸斷裂失效的現(xiàn)象，為了找出曲軸花鍵軸斷裂的原因并提出其解決方案，，提出了本課題。 本課題就以QRJ-150型空壓機為基礎，結(jié)合空壓機理論，對斷裂曲軸有關部件借助于有限元分析軟件進行了曲軸的靜強度疲勞分析、模態(tài)分析和花鍵軸的靜強度疲勞分析。綜合分析有限元分析結(jié)果和實際斷裂情況，論文提出了以漸開線花鍵軸取代原矩形花鍵軸來解決曲軸斷裂失效的改進方案，并用有限元分析證明了方案的可行性,從理論上解決了曲軸花鍵軸斷裂的問題。 主要研究工作為： 1.應用UG軟件對QRJ-150型高壓活塞式空氣壓縮機進行三維建模和運動仿真，將分析結(jié)果與理論計算值作了比較; 2.通過ANSYS workbench軟件對曲軸進行靜力學分析和模態(tài)分析，完成靜強度、疲勞強度的校核; 3.分別對原花鍵軸、偏心花鍵軸和漸開線花鍵軸進行了有限元靜強度疲勞分析，提出了以漸開線花鍵軸取代原矩形花鍵軸的改進方案。
[Abstract]:Air compressor as a "general machinery" is widely used in the national economy and national defense construction, especially the miniature high-pressure air compressor is aircraft, tanks. The essential core of a ship's pneumatic control system. For some time. AVIC Industrial Hongguang Airborne equipment Co., Ltd. has found that other high-pressure piston air compressors of similar models such as QRJ-150 and KY-8 often occur crankshaft spline shaft fracture failure in the process of operation. The phenomenon. In order to find out the reason of the fracture of the crankshaft spline shaft and put forward its solution, this paper puts forward the subject. Based on QRJ-150 type air compressor and combined with the theory of air compressor, the static strength fatigue analysis of crankshaft is carried out by means of finite element analysis software. Modal analysis and static strength fatigue analysis of spline shaft. In this paper, an improved scheme of replacing the original rectangular spline shaft with involute spline shaft to solve the fracture failure of crankshaft is proposed, and the feasibility of the scheme is proved by finite element analysis. The fracture of crankshaft spline shaft is solved theoretically. The main research work is: 1. Three-dimensional modeling and motion simulation of QRJ-150 type high-pressure piston air compressor are carried out by using UG software, and the analysis results are compared with the theoretical calculation value. 2. The static analysis and modal analysis of crankshaft are carried out by ANSYS workbench software to check the static strength and fatigue strength; 3. The finite element static strength fatigue analysis of the original spline shaft, eccentric spline shaft and involute spline shaft is carried out, and an improved scheme of replacing the original rectangular spline shaft with involute spline shaft is put forward.
【學位授予單位】：南京航空航天大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH45

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