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橡膠軸承結構設計
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  • 本文首先闡述了橡膠元件在汽車的懸架系統與動力總成懸置系統中的應用,以及橡膠材料的眾多特性,例如粘彈性。對國內外研究橡膠襯套的情況做了詳細說明。車輛的NVH性能是評價駕駛車輛是否舒服的重要標準,它給車輛駕駛者的感受是最為直觀的。在汽車行駛時,由于不平路面帶來的振動,通過車輪傳遞給整車。橡膠元件在汽車行業中的應用十分廣泛,尤其是在需要減振,降噪以及?;ぶ匾悴考牟糠?。懸架系統與汽車動力總成懸置系統就是其中最為關鍵的兩部分。無論是在懸架系統還是在汽車動力總成懸置系統中,橡膠襯套都是作為汽車減振降噪系統中最為重要的零部件,因而對于橡膠襯套的研究就極為重要。研究這類問題時,比較適用的方法便是有限元分析法。現如今,計算機技術空前發達,有限元分析軟件眾多。
    本文首先闡述了橡膠元件在汽車的懸架系統與動力總成懸置系統中的應用,以及橡膠材料的眾多特性,例如粘彈性。對國內外研究橡膠襯套的情況做了詳細說明。
    然后介紹了有限元法的起源,發展歷程和國內外有限元法的研究情況。再然后介紹了有限元軟件的發展史和種類,重點講解了ANSYS有限元分析軟件的功能以及分析過程。
    最后運用ANSYS有限元分析軟件對橡膠襯套的靜剛度進行仿真實驗分析,并建立橡膠襯套有限元模型,然后設置邊界條件,進行剛度分析仿真實驗,用來模擬橡膠襯套的受力情況,探究了六個方向上的力或載荷加載到橡膠襯套上時,橡膠襯套的剛度變化情況。對其分別受到x,y,z軸向力與扭轉力時橡膠襯套發生的形變情況進行分析,并在仿真中記錄數據,畫出相關曲線圖。根據曲線圖所表述的函數關系,用以表達橡膠襯套靜剛度變化情況。

    關鍵詞:橡膠襯套,有限元分析法,懸架系統,靜剛度

    Abstract
    The NVH performance of a vehicle is an important criterion for evaluating whether the vehicle is comfortable or not. It gives the driver the most intuitive feeling. When a car is running, the vibration caused by uneven road surface is transmitted to the whole vehicle through the wheels. Rubber components are widely used in the automotive industry, especially in parts requiring vibration reduction, noise reduction and protection of important components. The suspension system and automobile powertrain mounting system are the two most critical parts. Whether in a suspension system or in automotive powertrain mounting system, rubber bushing is the most important part of automotive vibration and noise reduction system, so the research of rubber bushing is very important. When studying this kind of problem, the more suitable method is the finite element analysis method. Nowadays, computer technology is unprecedentedly developed, and there are many finite element analysis software.
    In this paper, the application of rubber components in asuspension system and powertrain suspension system of automobiles and the characteristics of rubber materials, such as viscoelasticity, are described. The research situation of rubber bushing at home and abroad are described in detail.
    Then it introduces the origin and development of the finite element method and the research situation of finite element method at home and abroad. Then it introduces the development history and types of finite element software, focusing on the functions and analysis process of ANSYS.
    Finally, ANSYS is used to simulate the static stiffness of rubber bushing, and the finite element model of rubber bushing is established. Then the boundary conditions are set up and the stiffness analysis simulation experiment is carried out to simulate the stress of rubber bushing. The stiffness change of rubber bushing is explored when the force or load in six directions is loaded on the rubber bushing. The deformation of rubber bushing subjected to x, y, z axial and torsional forces are analyzed, and the data are recorded in the simulation, and the relevant curves are drawn. According to the function relationship expressed in the graph, the static stiffness of rubber bushing can be expressed.

    Keywords:Rubber bushing,Finite Element Analysis,suspension system,Static stiffness



    目錄
    摘要 I
    Abstract II
    1 緒論 1
    1.1 研究背景 1
    1.2 國內外研究現狀 5
    1.3 研究內容與目的 6
    2 有限元分析法 7
    2.1 有限元發展史 7
    2.2 有限元分析軟件ANSYS 8
    2.3 前處理???9
    2.4 分析計算???10
    2.5 后處理???10
    2.6 ANSYS有限元分析流程 10
    2.7 本章小結 11
    3 橡膠襯套有限元模型 12
    3.1 發動機左懸置橡膠襯套 12
    3.2 三維模型的建立 13
    3.3 大變形問題 14
    3.4 橡膠材料模型的建立 15
    3.5 有限元模型的建立 15
    3.6 邊界條件設置 16
    3.7 本章小結 16
    4 橡膠襯套剛度分析 17
    4.1 x方向靜剛度 17
    4.2 x方向扭轉靜剛度 17
    4.3 y方向靜剛度 18
    4.4 y方向扭轉剛度 20
    4.5 z方向靜剛度 20
    4.6 z方向扭轉剛度 21
    4.7 數據總結與結論 22
    4.7 本章小結 22
    5 總結與展望 24
    5.1 總結 24
    5.2 展望 24
    參考文獻 25
    致謝 27



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