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黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)
摘 要
本設(shè)計(jì)結(jié)合懸架設(shè)計(jì)知識(shí)，對麥弗遜懸架進(jìn)行了設(shè)計(jì)計(jì)算，詳細(xì)分析了懸架導(dǎo)向機(jī)構(gòu)空間關(guān)鍵點(diǎn)坐標(biāo)的計(jì)算方法，在此基礎(chǔ)上，應(yīng)用虛擬樣機(jī)技術(shù)，在ADAMS/View中對麥弗遜式懸架進(jìn)行合理簡化并建模，并對模型進(jìn)行了參數(shù)化，設(shè)計(jì)輸入初始參數(shù)的功能，即改變初始參數(shù)就能快速生成不同的懸架模型，提高了仿真分析以及優(yōu)化設(shè)計(jì)的效率，使平臺(tái)具有開放性。分析研究了所需優(yōu)化的目標(biāo)參量(如車輪定位角、車輪側(cè)滑量)及其函數(shù)表達(dá)式。進(jìn)行了懸架動(dòng)力學(xué)仿真分析，研究懸架各性能參數(shù)在車輪跳動(dòng)過程中的變化趨勢，并指出需要改進(jìn)的地方。分析每個(gè)設(shè)計(jì)變量的變化對樣機(jī)性能的影響，提出優(yōu)化設(shè)計(jì)的方案。再次進(jìn)行仿真，對比分析了優(yōu)化前后的仿真結(jié)果，并評價(jià)了優(yōu)化方案。優(yōu)化后懸架的性能明顯提高，驗(yàn)證了優(yōu)化方案的可行性，并完成虛擬設(shè)計(jì)及試驗(yàn)。最后運(yùn)用Pro/E軟件對麥弗遜懸架進(jìn)行模型的建立。
本設(shè)計(jì)研究的目的和意義為在試制前的階段進(jìn)行設(shè)計(jì)和試驗(yàn)仿真，并且提出改進(jìn)意見，在產(chǎn)品制造出之前，就可以發(fā)現(xiàn)并更正設(shè)計(jì)缺陷，完善設(shè)計(jì)方案，縮短開發(fā)周期，提高設(shè)計(jì)質(zhì)量和效率。并借助此平臺(tái)完成了小型觀光旅游車的前懸架設(shè)計(jì)工作，驗(yàn)證了該平臺(tái)的實(shí)用性和通用性。
關(guān)鍵詞：麥弗遜式懸架；虛擬設(shè)計(jì)；仿真；ADAMS；Pro/E
ABSTRACT
On the basis of the Suspension design, this paper calculated a detailed requirements for McPherson suspension structure, analyzed the suspension oriented institutions, prepared a simple calculation procedures for the parameter select of the initial suspension oriented institutions. By virtual prototyping technology, I simplified and built a model of Macperson suspension in ADAMS/View, made the model parameters, then the model was open, and prepared the necessary measuring function. I discussed the performance of the front wheel alignment parameters in a front wheel vehicle positioning. The model was a virtual front suspension test platform. This thesis analyzed the change trend of the suspension performance parameters in the process of flopping the wheel. The impacts of its changes in the trend of design variables are also analyzed, make an optimized design of the program, with the comparative analysis to verify the feasibility of the optimization program before and after the optimization, the suspension’s key data was generated, the virtual design and test were finished. Finally I used Pro/E for McPherson a modeling.
The purpose and significance of the article lies in establishing a vehicle McPherson suspension of the virtual design platform for virtual simulation test, pioneering a more scientific approach for the design and development of McPherson suspension, combining the automobile design theory, resolving problems in the field of kinematics and dynamics, improving the quality of design. This research will also contribute to enhance the ability to independently develop products for China’s auto mobile industry.
Key words: MacPherson Suspension; Viertual Designing; Simulation; ADAMS; Pro/E
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