本文關(guān)鍵詞：基于多物理場耦合分析的高壓柱塞泵結(jié)構(gòu)強度研究　出處：《重慶理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高壓油泵 有限元 多物理場 耦合

【摘要】：隨著柴油發(fā)動機的飛速發(fā)展,燃油噴射的壓力也越來越大,而高壓柱塞泵是燃油噴射系統(tǒng)的核心,其結(jié)構(gòu)緊湊、工作壓力高,在高壓下仍需保持較高的效率。本文利用有限元軟件和松耦合的方法對高壓柱塞泵進行多物理場耦合分析的結(jié)構(gòu)強度研究,提出了比較系統(tǒng)性對其進行研究的方法。主要做了如下工作:⑴高壓油泵在泵油階段的流體動力學(xué)分析首先利用Hypermesh有限元軟件建立燃油的流體動力學(xué)模型,將模型導(dǎo)入Fluent軟件進行流體分析,根據(jù)所給的條件及參數(shù),計算其泵油過程油壓變化。⑵油泵柱塞偶件流固耦合結(jié)構(gòu)強度分析運用Hypermesh建立柱塞與柱塞套的結(jié)構(gòu)有限元模型,其次利用前述流體動力學(xué)計算結(jié)果,導(dǎo)出柱塞與柱塞套的最大油壓時刻流體壓力分布數(shù)據(jù),將其導(dǎo)入Abaqus軟件里,將油壓載荷映射到固體有限元模型中,計算柱塞偶件應(yīng)力與變形。⑶凸輪-滾輪-滾輪銷運動組合的結(jié)構(gòu)力學(xué)分析首先運用Adams多體動力學(xué)軟件,導(dǎo)入前述柱塞油壓時間曲線進行加載,進行多體動力學(xué)仿真。然后根據(jù)計算結(jié)果提取滾輪銷對滾輪的作用力,利用Abaqus軟件對凸輪-滾輪進行靜力分析。其次利用經(jīng)典的Hertz接觸理論計算法和有限元法計算出的最大接觸應(yīng)力進行比較。再通過建立Archard磨損方程對凸輪在一個周期內(nèi)的磨損做簡單的估算,為凸輪的耐磨損設(shè)計提供理論依據(jù)。最后根據(jù)計算結(jié)果提取凸輪對滾輪的作用力,利用Abaqus軟件對滾輪-滾輪銷進行靜力分析。⑷電磁閥電磁力分析利用Ansoft Maxwell軟件建立電磁閥模型并計算一個周期的電磁力變化。⑸旁通閥電磁、液固耦合動態(tài)分析運用Hypermesh建立包含旁通閥、旁通閥套、彈簧盤、銜鐵和螺釘?shù)碾姶�、液固耦合有限元模型。然后利用前述流體動力學(xué)計算結(jié)果,導(dǎo)出旁通閥的流體壓力分布數(shù)據(jù)到有限元模型,再利用電磁閥計算的電磁力作為載荷條件,對旁通閥關(guān)閉以及泵油過程進行動態(tài)力學(xué)分析。本文不僅考慮到泵油階段流體對固體的影響,還利用多體動力學(xué)仿真對凸輪滾輪進行分析,并與接觸應(yīng)力的經(jīng)典算法進行比較,以及利用電磁分析對旁通閥的打開、泵油和關(guān)閉過程進行動態(tài)分析,系統(tǒng)性地對整個噴油泵關(guān)鍵部件進行了完整的分析,也為其他類似油泵的分析提出了一個思路。
[Abstract]:With the rapid development of diesel engine, the pressure of fuel injection is increasing, and the high pressure piston pump is the core of fuel injection system, its structure is compact, the working pressure is high. It is necessary to maintain high efficiency at high pressure. In this paper, the structural strength of high pressure piston pump is studied by means of finite element software and loose coupling method. The methods of systematic research are put forward. The main work is as follows:. Firstly, the fluid dynamics model of high pressure oil pump is established by Hypermesh finite element software. The model is imported into Fluent software for fluid analysis, according to the given conditions and parameters. To calculate the oil pressure change during the oil pump. 2. The analysis of the fluid-solid coupling structure strength of the plunger coupling part of the oil pump. The structural finite element model of the plunger and plunger sleeve is established by using Hypermesh. Secondly, the fluid pressure distribution data of the maximum oil pressure time of plunger and plunger sleeve are derived by using the results of the fluid dynamics calculation mentioned above, and imported into Abaqus software. The oil pressure load is mapped to the solid finite element model to calculate the stress and deformation of the plunger coupling. 3. The structural mechanics analysis of the kinematic combination of cam roller and roller pin is carried out by using Adams multi-body dynamics software. Then the force of roller pin on roller wheel is extracted according to the result of calculation by introducing the oil pressure time curve of the plunger to load and carry on the multi-body dynamics simulation. The static analysis of cam-roller is carried out by using Abaqus software. Secondly, the maximum contact stress calculated by classical Hertz contact theory method is compared with that calculated by finite element method. Then Arc is established. Hard wear equation is used to estimate the wear of cam in a period. It provides a theoretical basis for the wear resistant design of the cam. Finally, the force of the cam on the roller is extracted according to the calculation results. Static Analysis of Roller and Roller Pin by using Abaqus Software. .4 electromagnetic Force Analysis of Solenoid Valve using Ansoft. Maxwell software establishes the solenoid valve model and calculates the electromagnetic force variation of a period of 5. 5 bypass valve electromagnetic. Dynamic analysis of liquid-solid coupling using Hypermesh to establish electromagnetic properties including bypass valve, bypass valve sleeve, spring disc, armature and screw. The fluid pressure distribution data of the bypass valve are derived to the finite element model, and the solenoid force calculated by the solenoid valve is used as the load condition. Dynamic mechanical analysis of bypass valve closure and pump oil process is carried out. This paper not only takes into account the effect of pump fluid on solid, but also makes use of multi-body dynamics simulation to analyze the cam roller. Compared with the classical algorithm of contact stress and the dynamic analysis of the opening, pump oil and closing process of the bypass valve by electromagnetic analysis, the key parts of the whole fuel injection pump are systematically analyzed. Also for other similar oil pump analysis proposed a train of thought.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TH322

【相似文獻】

相關(guān)期刊論文 前10條

1 劉光新;;超高壓柱塞泵故障原因分析與對策[J];常州信息職業(yè)技術(shù)學(xué)院學(xué)報;2007年03期

2 李建華;馮德華;;高壓柱塞泵的改進[J];寬厚板;2007年04期

3 馮德華;李建華;馬建凱;;高壓柱塞泵的改進[J];液壓與氣動;2008年03期

4 胡冬梅;;高壓柱塞泵液缸體開裂分析[J];煤礦機械;2011年11期

5 周宏強;趙暑生;王蓬勃;;高壓柱塞泵維修工具的研制與應(yīng)用[J];勝利油田職工大學(xué)學(xué)報;2007年06期

6 楊平;;四缸閥配式徑向變量超高壓柱塞泵的設(shè)計計算與問題的分析[J];貴州科學(xué);2010年01期

7 ;賽克思推新品高壓柱塞泵服務(wù)挖掘機[J];液壓氣動與密封;2010年12期

8 李光偉;;濃硝酸高壓柱塞泵的技術(shù)改造[J];石油和化工設(shè)備;2011年02期

9 熊國良;楊洪亮;王濱;姜凡波;;新型高壓柱塞泵緩沖器[J];石油機械;2012年01期

10 焦海旭;焦陽;;超高壓柱塞泵設(shè)計制造的發(fā)展趨勢[J];清洗世界;2012年03期

相關(guān)碩士學(xué)位論文 前2條

1 張曉;基于多物理場耦合分析的高壓柱塞泵結(jié)構(gòu)強度研究[D];重慶理工大學(xué);2016年

2 駱科技;多種控制高壓柱塞泵設(shè)計及實驗研究[D];西華大學(xué);2012年

，

本文編號：1434199