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FSAE電動賽車多連桿式后懸架結(jié)構(gòu)設(shè)計與分析

摘要：本畢業(yè)設(shè)計對FSAE賽車后懸架的結(jié)構(gòu)及特點進行比較，綜合比對選取適合的后懸架類型；我們最后決定FSAE賽車的后懸架選用多連桿結(jié)構(gòu)。根據(jù)賽車參數(shù)，進行了大量的計算，根據(jù)數(shù)據(jù)確立了后懸架的尺寸，材料，以及懸架部件的選取以及參數(shù)，然后利用 proe 建立 FSAE 賽車后懸架的三維機構(gòu)仿真模型；在建立三維模型的過程中，根據(jù)坐標來建立三維模型，這樣的精度高。將三維模型導入有限元軟件ANSYS 中，進行靜力學計算，以及動態(tài)分析，對后懸架下控制臂的0.5g加速工況，0.95g轉(zhuǎn)彎工況的應(yīng)變和應(yīng)力進行分析，最后證實了設(shè)計滿足要求，且存在安全富裕度。然后進行共振分析，分別選取了五種狀態(tài)下的振型與固有頻率進行比較，來判斷下控制臂的結(jié)構(gòu)和材料是否滿足設(shè)計要求，經(jīng)過比較得出了下控制臂滿足設(shè)計要求。

    關(guān)鍵詞：FSAE賽車；懸架；校核；有限元

Lightweight Design Light Truck Chassis

Abstract:After the graduation design of FSAE car suspension structure and characteristics of comparison, choose the right rear suspension structure types; The FSAE car suspension parameter calculation,then The FSAE car rear suspension was established based on CATIA 3 d model; Establishment of ADAMS/Car suspension and a simulation model of virtual simulation analysis was carried out on the rear suspension of variation is larger suspension parameters optimization using ADAMS/Insight module; The CATIA model into ANSYS, the static calculation, the suspension column under static, steering and braking conditions of strain and stress were analyzed, and to determine whether a column structure and materials meet the design requirements.Under the environment of ADAMS/Car,Control arm to the traditional process of casting or forging, using the casting and forging can not only save costs, and can lay a foundation for parts of the whole control arm design. In addition, the control arm parts are large stamping equipment, although it into during increased manufacturing difficulty, but it makes a connection with the interchangeability, and the loss of castings and forgings connection part after school as soon as possible to replace the entire assembly. This paper discusses the control arm is made of steel plate stamping forming process, and established the virtual simulation model of automobile suspended frame suspension dynamic simulation analysis. Through the finite element software ANSYS finite element theory and method to create the finite element model, 0.5 g acceleration condition, 0.95 g to jump condition on the working condition and 3.5 g. Stress and strain analysis.

  Key words: finite element method (fem); The frame; Lightweight; check

目    錄

摘要 I

Abstract II

目    錄 III

1 緒論 1

1.1 國內(nèi)研究現(xiàn)狀 1

1.2 國外研究現(xiàn)狀 3

1.3 本章小結(jié) 3

2 FSAE后懸架的建立 4

2.1 FSAE賽車懸架的選擇 4

2.2 后懸架參數(shù)設(shè)計 5

2.2.1 后懸架固有頻率的選擇 6

2.2.2 四輪定位參數(shù) 6

2.2.3 FSAE賽車懸架剛度計算 7

2.3 本章小結(jié) 10

3 對FSAE的后懸架進行三維建模 11

3.1 懸架運動學特性分析 13

3.2 本章小結(jié) 16

4 控制臂有限元分析 17

4.1 有限元法的介紹 17

4.2 控制臂有限元模型建立 17

4.2.1 幾何模型 17

4.2.2 網(wǎng)格劃分及網(wǎng)格質(zhì)量控制 18

4.2.3 材料屬性定義 19

4.2.4 慣性釋放及模型的約束與加載 19

4.3 典型極限工況控制臂結(jié)構(gòu)有限元分析 20

4.3.1 0.5g加速工況 20

4.3.2 0.95g轉(zhuǎn)向工況 21

4.4 共振分析 22

4.5 本章小結(jié) 25

5 結(jié)論 26

參  考  文  獻 28

致    謝 30

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外文文獻翻譯 -.doc

FSAE電動賽車多連桿式后懸架結(jié)構(gòu)設(shè)計與分析.doc

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后懸上控制臂A3.dwg

后懸下控制臂A3.dwg

后懸架上下叉臂裝配圖A1.dwg

后懸架裝配圖A0.dwg

搖臂A3.dwg

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