本文關鍵詞：基于有限元法的MC尼龍斜齒輪性能分析　出處：《湘潭大學》2011年碩士論文　論文類型：學位論文

  更多相關文章： 接觸線 斜齒輪 ANSYS 瞬態(tài)動力學 MC尼龍

【摘要】：MC尼龍(Monomer Casting Nylon)又稱單體澆鑄尼龍,具有強度高、韌性好、抗沖擊、耐疲勞,并且具有較好的抗蠕變、吸音、回彈和很好的耐磨、自潤滑、與其他材料不粘結等多種獨特性能,是廣泛應用于幾乎所有的工業(yè)領域的工程塑料。由于MC尼龍的上述特有性能,使用MC尼龍材料制作齒輪,在某些情況下將發(fā)揮比金屬齒輪更好的作用。 與傳統(tǒng)的金屬齒輪相比MC尼龍齒輪強度和彈性模量均較低,難以承受重載荷,所以限制了其應用領域。為了使其更好地應用于工程實際,本文的對MC尼龍斜齒輪力學性能進行分析,主要工作和研究內容如下: 1.對目前塑料齒輪在工業(yè)領域的應用和發(fā)展、應用有限元法對齒輪進行模態(tài)分析、以及應用有限元接觸方法對齒輪進行模擬分析的研究現狀和進展,進行了簡要的概述。 2.通過有機結合SolidWorks及其插件GearTrax、HyperMesh及ANSYS軟件建立了斜齒輪及斜齒輪副的三維有限元模型。這一從建立幾何模型到最終進行有限元計算的方法,為工程人員及科研工作者進行有限元模擬分析提供了快速有效的途徑。 3.在上述建模的基礎上,應用ANSYS的Block Lanczos法對MC尼龍斜齒輪進行模態(tài)分析,提取了低價固有頻率和對應的主振型,較好地研究了系統(tǒng)的固有特性,為減小齒輪振動和噪聲及避免齒輪傳動系統(tǒng)發(fā)生共振,激振力的頻率應與系統(tǒng)的固有頻率錯開。 4.建立MC尼龍斜齒輪副嚙合三維有限元模型,通過應用ANSYS中瞬態(tài)動力學的full法,對斜齒輪副的嚙合傳動過程進行計算機模擬實驗。結果表明,齒輪的最大應力出現在齒根位置,最大應力為84.3MPa,滿足該載荷工況下的強度要求。接觸線寬度和接觸線傾斜角能反映出齒輪副在嚙合過程中齒輪運行的平穩(wěn)性。模擬實驗結果為齒輪接觸線寬度為1.33mm,接觸線傾斜角與齒輪螺旋角大致相等,這表明斜齒輪在嚙合過程中運行能保持相對平穩(wěn)。同時,模擬實驗還得到了齒根應力譜,為齒輪疲勞壽命計算提供依據。 這些研究結果對進一步研發(fā)、改進和優(yōu)化齒輪具有一定的參考價值。文章最后就進一步的研究方向做出了闡述。
[Abstract]:MC nylon , also known as monomer casting nylon , has many unique properties such as high strength , good toughness , impact resistance , fatigue resistance , good creep resistance , sound absorption , rebound and good wear resistance , self - lubrication , non - bonding with other materials , etc . It is widely used in almost all engineering plastics in the field of industry . Compared with the traditional metal gears , the strength and the elastic modulus of MC nylon gears are low , the heavy load is difficult to bear , so the application fields are limited . In order to better apply the MC nylon gear to the engineering practice , the mechanical properties of MC nylon helical gears are analyzed , and the main work and the research contents are as follows : 1 . Based on the application and development of plastic gear in the field of industry , the finite element method is applied to the modal analysis of gear , and the research status and progress of gear simulation analysis using finite element contact method are briefly summarized . 2 . The three - dimensional finite element model of helical gear and helical gear pair is established by means of the combination of the organic combination and the plug - ins , HyperMesh and ANSYS . This method provides a quick and effective way for the finite element simulation analysis of engineering personnel and scientific research workers from the establishment of the geometric model to the final finite element calculation method . 3 . On the basis of the above modeling , the block Lanczos method of ANSYS is applied to the modal analysis of MC nylon helical gear , the low - cost natural frequency and the corresponding main mode are extracted , the inherent characteristics of the system are studied well . In order to reduce the vibration and noise of the gear and avoid the resonance of the gear transmission system , the frequency of the excitation force should be staggered with the natural frequency of the system . 4 . A three - dimensional finite element model of MC nylon helical gear is established . The meshing transmission process of helical gear pair is simulated by full method of transient dynamics in ANSYS . The results show that the maximum stress of gear is about 84.3MPa , and the maximum stress is 84.3MPa . The contact wire width and the contact angle can reflect the stability of gear operation . The simulation results show that the bevel gear can be kept relatively stable during the meshing process . At the same time , the simulation experiment also obtains the tooth root stress spectrum , which provides the basis for the calculation of the fatigue life of the gear . The results of these studies have some reference value for further research and development , improvement and optimization of gears .

【學位授予單位】：湘潭大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH132.41

【引證文獻】

相關碩士學位論文 前1條

1 龍勇云;數控轉臺中不同滾子類型弧面凸輪機構的靜、動態(tài)特性仿真分析研究[D];湘潭大學;2012年

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本文編號：1361501