本文選題：離合器 + 動態(tài)仿真��； 參考：《重慶大學(xué)》2012年碩士論文

【摘要】：濕式多片摩擦離合器具有體積小、傳遞扭矩大、控制系統(tǒng)簡單、啟動換向平穩(wěn)等優(yōu)點(diǎn)，廣泛應(yīng)用于船舶驅(qū)動系統(tǒng)中。由于船用齒輪箱倒順離合器成對安裝，處于空轉(zhuǎn)狀態(tài)的離合器中摩擦片與對偶片相對線速度倍增，若分片不均勻，片間油層較薄的摩擦片可能因油膜剪切發(fā)熱而快速升溫，出現(xiàn)過熱現(xiàn)象。因此，開展離合器分片過程流場動態(tài)仿真、熱流耦合分析及油路結(jié)構(gòu)優(yōu)化的研究，對解決離合器過熱失效問題具有重要理論意義和工程應(yīng)用價值。 本文課題來源于重慶市科技攻關(guān)計劃項(xiàng)目。針對船用齒輪箱中的濕式多片摩擦離合器，進(jìn)行流場動態(tài)仿真及油路優(yōu)化，主要研究工作如下： ①以摩擦片及對偶片的瞬態(tài)運(yùn)動方程作為流場移動邊界，結(jié)合離合器的結(jié)構(gòu)及使用工況，在ANSYS/CFX軟件中建立濕式多片摩擦離合器油路流場的參數(shù)化有限元模型，采用動網(wǎng)格技術(shù)，對離合器分片過程進(jìn)行動態(tài)仿真，研究潤滑油入口流量對分片狀態(tài)的影響規(guī)律。 ②考慮潤滑油粘溫特性及油膜剪切對離合器油路能量方程的影響，建立離合器實(shí)際油路的熱流耦合有限元模型，通過計算流體動力學(xué)分析，得出潤滑油入口流量對潤滑油溫度場的影響，并與試驗(yàn)結(jié)果進(jìn)行對比。 ③建立帶螺旋油槽及徑向油槽的摩擦片間潤滑油參數(shù)化有限元模型，進(jìn)行熱流耦合分析，得到片間油層壓力、速度及溫度分布規(guī)律，研究油層厚度及油槽參數(shù)對潤滑油溫度的影響。 ④以噴油孔位置及油孔直徑為設(shè)計變量，離合器最大和最小工作油壓為約束條件，各摩擦片及對偶片所受油壓的均方根值為目標(biāo)函數(shù)，利用ANSYS/Workbench軟件，構(gòu)建離合器油路流場優(yōu)化模型，采用響應(yīng)面法對油路結(jié)構(gòu)進(jìn)行優(yōu)化。
[Abstract]:The wet multi-disc friction clutch has the advantages of small volume, large torque transfer, simple control system, smooth starting and commutation, etc. It is widely used in the ship driving system. Because of the pairwise installation of the marine gear box reverse clutch, the relative linear velocity of the friction disc and the dual plate in the idle state of the clutch is doubled. If the slice is not uniform, the friction sheet with a thinner oil layer may be heated rapidly because of the heat of the oil film shearing. There is overheating. Therefore, it is of great theoretical significance and engineering application value to carry out the dynamic simulation of the flow field, the analysis of the heat flux coupling and the optimization of the structure of the oil circuit in the process of clutch splitting. This paper comes from the project of Chongqing Science and Technology Project. In view of wet multi-disc friction clutch in marine gear box, the flow field dynamic simulation and oil circuit optimization are carried out. The main research work is as follows: 1 taking the transient motion equation of friction plate and dual plate as the moving boundary of flow field, combining the structure and working condition of clutch, the parameterized finite element model of oil flow field of wet multi-disc friction clutch is established in ANSYS/CFX software, and the dynamic mesh technology is adopted. The dynamic simulation of clutch slicing process was carried out to study the influence of lubricating oil inlet flow rate on the slice state. (2) considering the viscosity and temperature characteristics of lubricating oil and the effect of oil film shear on the energy equation of clutch oil path, the heat flow coupling finite element model of clutch actual oil path is established, and the fluid dynamics analysis is carried out. The influence of lubricating oil inlet flow rate on the temperature field of lubricating oil is obtained, and the results are compared with the test results. (3) the parametric finite element model of lubricating oil between friction discs with spiral and radial oil grooves is established, and the heat flow coupling analysis is carried out, and the distribution of pressure, velocity and temperature of interlamellar oil layer is obtained. The effects of reservoir thickness and tank parameters on the temperature of lubricating oil were studied. (4) taking the position of the injection hole and the diameter of the oil hole as the design variables, the maximum and minimum working oil pressure of the clutch as the constraint condition, and the root mean square value of the oil pressure of the friction plates and the dual plates as the objective function, the ANSYS/Workbench software is used. The optimization model of clutch oil flow field is constructed, and the structure of oil path is optimized by response surface method.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH133.4

【引證文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 侯彬彬;熱流耦合井筒流動及其地層滲流研究[D];中國科學(xué)技術(shù)大學(xué);2010年

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本文編號：1848982