汽車(chē)油氣懸架系統(tǒng)特性研究與設(shè)計(jì)


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目錄
一、緒論………………………………………………………………………… 5
1.1概述……………………………………………………………………………5
1.2油氣懸架特性…………………………………………………………………6
1.3國(guó)內(nèi)外研究現(xiàn)況………………………………………………………………7
1.4本課題研究意義和研究?jī)?nèi)容…………………………………………………9
二、油氣懸架的結(jié)構(gòu)形式和工作原理…………………………………… 10
2.1系統(tǒng)分類(lèi)………………………………………………………………………10
2.2單氣室油氣彈簧………………………………………………………………10
2.3雙氣室油氣彈簧………………………………………………………………12
2.4兩級(jí)壓力氣室油氣彈簧………………………………………………………12
三、油氣懸架系統(tǒng)建?！?…………13
3.1概述……………………………………………………………………………13
3.2單氣室油氣彈簧非線性模型…………………………………………………13
3.2.1單氣室油氣懸架物理模型的建立………………………………………13
3.2.2單氣室油氣懸架數(shù)學(xué)模型的建立………………………………………14
3.2.3單氣室油氣懸架參數(shù)的確定……………………………………………21
3.3雙氣室油氣彈簧非線性模型…………………………………………………22
3.3.1雙氣室油氣懸架物理模型的建立………………………………………23
3.3.2雙氣室油氣懸架數(shù)學(xué)模型的建立………………………………………24
3.3.3雙氣室油氣懸架參數(shù)的確定……………………………………………26
四、油氣懸架系統(tǒng)特性分析…………………………………………………30
4.1概述……………………………………………………………………………30
4.2非線性特性影響因素…………………………………………………………30
4.3剛度特性………………………………………………………………………31
4.3.1 油氣懸架剛度特性公式推導(dǎo)………………………………… ………31
4.4阻尼特性………………………………………………………………………32
4.4.1 油氣懸架阻尼特性公式推導(dǎo)………………………………………… 32
五、一種單氣室阻尼可變油氣分離式彈簧的設(shè)計(jì)………………………35
5.1設(shè)計(jì)背景說(shuō)明…………………………………………………………………35
5.2設(shè)計(jì)內(nèi)容及構(gòu)成………………………………………………………………35
5.3附圖說(shuō)明………………………………………………………………………36
5.4具體工作過(guò)程…………………………………………………………………41
六、總結(jié)……………………………………………………………………………42
參考文獻(xiàn)…… ……………………………………………………………………43
致謝………………………………………………………………………………44


汽車(chē)油氣懸架系統(tǒng)特性研究與設(shè)計(jì)

摘要 車(chē)身的原有振動(dòng)特性決定了汽車(chē)的平順性和舒適性，車(chē)身的固有振動(dòng)特性又與懸架的特性相關(guān)。車(chē)架和車(chē)橋之間一切傳輸力和力矩的連接裝置的的總和叫做懸架，用來(lái)緩沖車(chē)輛行駛過(guò)程中遇到的路面激勵(lì)帶來(lái)的給車(chē)身或車(chē)橋的沖擊抖動(dòng)，同時(shí)降低由其帶來(lái)的振動(dòng)。油氣懸架有優(yōu)越的非線性剛度特性和非線性阻尼特性，車(chē)輛的采用這種懸架系統(tǒng)平穩(wěn)運(yùn)行，減少顛簸的道路，緩解疲勞，提高車(chē)輛的乘坐舒適性。因此，對(duì)油氣懸架系統(tǒng)性能的研究對(duì)提高車(chē)輛的乘坐舒適性具有重要的現(xiàn)實(shí)意義。
基于單汽缸油氣彈簧為研究對(duì)象，研究工作主要集中在以下幾個(gè)方面進(jìn)行了：首先介紹了懸架系統(tǒng)的發(fā)展歷程，實(shí)際應(yīng)用，國(guó)內(nèi)外研究現(xiàn)況，接著闡述了懸架的分類(lèi)和各自的技術(shù)特性。然后建立了基于粗糙的油氣懸架的物理模型和數(shù)學(xué)模型，分析了油氣懸架系統(tǒng)特性的影響因素，和在此基礎(chǔ)上，設(shè)計(jì)了一種新型結(jié)構(gòu)的單室油氣彈簧，它的阻尼力可變的、油氣分離式的。希望為其他同仁進(jìn)一步研究和精確設(shè)計(jì)提供一些參考。


關(guān)鍵詞：油氣懸架 建模 非線性特性 結(jié)構(gòu)設(shè)計(jì)


Research and design on vehicle hydro pneumatic suspension system

Abstract The original vibration body determines the vehicle ride comfort, the inherent characteristics of vibration characteristics of car body and suspension of relevant. Suspension is the frame and the axle between all general force transmission connection device, buffer in automobile driving process caused byroad excitation and transmitted to the frame or body of the impact force, while attenuating vibration caused by it. Oil air suspension has good nonlinear stiffness and damping characteristics, the suspension of vehicles run smoothly, reduce the road bumps, relieve fatigue, improve vehicle ride comfort. Therefore, study on the performance of hydro pneumatic suspension system has important practical significance to improve vehicle ride comfort.
Based on the single cylinder oil gas spring as the research object, research work is carried out mainly in the following aspects:First introduced the development course, suspension system application,research status at home and abroad, then expounds the suspension classification and respective technical characteristics. Then a mathematical model of the physical model of oil gas suspension based on rough set, analyze the influencing factors of hydro pneumatic suspension system characteristics,design a new structure of single chamber damping force variable separation of oil and gas spring an..