本文關(guān)鍵詞： 二系垂向 阻尼性能 流場仿真 系統(tǒng)動(dòng)力學(xué)仿真 示功圖　出處：《西南交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：機(jī)車車輛在線路上運(yùn)行的時(shí)候,路面的不平順將直接通過車輪傳遞到車體上,引起機(jī)車上下、左右振動(dòng)。如果不安裝減振器,這種振動(dòng)會(huì)隨著機(jī)車速度的提升而加劇,使機(jī)車使用壽命減小。也就是說,減振器的質(zhì)量以及技術(shù)直接影響著鐵路機(jī)車的提速。 本文首先利用ANSYS CFD仿真軟件,以二系垂向油壓減振器的結(jié)構(gòu)為基礎(chǔ),介紹了其工作原理。在ProE中建立了二系垂向油壓減振器的流體模型,然后將模型導(dǎo)入ICEM中劃分網(wǎng)格,最后在ANSYS CFX中進(jìn)行計(jì)算。以整個(gè)減振器系統(tǒng)為研究對象,利用力學(xué)平衡原理、流體力學(xué)知識(shí),建立起了二系垂向油壓減振器阻尼系統(tǒng)的數(shù)學(xué)模型,并闡述了隨著活塞振動(dòng)速度不同,油壓減振器阻尼閥的不同工作情況。根據(jù)在線檢測的結(jié)果,分析了減振器在不同特殊路況下的阻尼性能,為減振器阻尼性能的仿真奠定了理論基礎(chǔ)。 其次根據(jù)阻尼系統(tǒng)的數(shù)學(xué)模型,在MATLAB/Simulink里建立了減振器的動(dòng)態(tài)系統(tǒng)模型,考慮了拉伸與壓縮行程的模型,以及減振器在不同速度下的不同阻尼閥組合,分別建立了三種工況下的減振器仿真模型,得出了減振器在對應(yīng)工況下的動(dòng)態(tài)阻尼性能曲線。以株洲聯(lián)誠減振器公司的試驗(yàn)臺(tái)為基礎(chǔ),給減振器加載與仿真信號(hào)一樣的激振信號(hào),測試并記錄減振器各項(xiàng)阻尼性能參數(shù),并結(jié)合實(shí)驗(yàn)所得數(shù)據(jù),對比分析了模型的優(yōu)劣性。 最后以液壓系統(tǒng)仿真平臺(tái)AMESim為基礎(chǔ),從液壓系統(tǒng)的工作原理出發(fā),建立了二系垂向油壓減振器的液壓系統(tǒng)仿真模型。將仿真結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行比較,誤差在行業(yè)標(biāo)準(zhǔn)規(guī)定的范圍內(nèi),說明了AMESim模型是正確的。使用單一參變法分析了減振器關(guān)鍵參數(shù)對阻尼的影響。
[Abstract]:When the vehicle running on the line, pavement irregularity will directly through the wheel transfer to the hull, causing the locomotive under Vibration about. If you do not install the vibration damper, which increases as the speed of the locomotive, the locomotive service life reduced. That is to say, the quality and technology of shock absorber affect the speed of railway locomotive.
Firstly, using ANSYS CFD simulation software, with two vertical structure to the oil damper as the foundation, introduces its working principle. Established in ProE two vertical fluid damper model, and then the mesh model into ICEM, finally calculated in ANSYS CFX. In the whole vibration system as the research object, using the mechanical balance principle, the knowledge of fluid mechanics, established the mathematical model of two vertical damper damping system, and expounds the vibration velocity with different piston, the different working condition of hydraulic damper damping valve. According to the online detection results, the damping performance of damper in different special conditions the analysis lays a theoretical foundation for the simulation of the damping performance of damper.
Secondly, according to the mathematical model of damping system, in MATLAB/Simulink in the dynamic system model of shock absorber is established, considering the tensile and compression stroke of the model, as well as the shock absorber in different speed under different damping valve combination, the damper simulation model under three conditions are established. The dynamic damping performance curve in the corresponding conditions. The shock absorber is obtained. Test bench in Zhuzhou Liancheng shock absorber company as the basis, to the vibration damper load and simulation signal, test and record the performance parameters of the damping shock absorber, and combined with the experimental data, comparative analysis of the advantages and disadvantages of the model.
At last the simulation platform of AMESim hydraulic system as the foundation, starting from the working principle of the hydraulic system, set up two vertical simulation model of the hydraulic system of hydraulic damper. The simulation results are compared with experimental results, the error in the range of industry standard, describes the AMESim model is correct. Using a single parameter analysis method the influence of key parameters on the damping shock absorber.

【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U270.33;TB535.1

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