發(fā)布時(shí)間：2018-03-25 20:34

  本文選題：主動(dòng)再制造　切入點(diǎn)：最佳時(shí)間點(diǎn)　出處：《合肥工業(yè)大學(xué)》2015年碩士論文

【摘要】：當(dāng)前我國(guó)仍處于加快工業(yè)化進(jìn)程的階段,經(jīng)濟(jì)與社會(huì)的快速發(fā)展對(duì)資源能耗具有極高的依賴性。如何在保持經(jīng)濟(jì)社會(huì)穩(wěn)定良好發(fā)展的同時(shí)節(jié)省自然資源和減少環(huán)境排放成為推進(jìn)工業(yè)化進(jìn)程中的一大棘手問題,因此在工業(yè)大環(huán)境處于這種困境中再制造產(chǎn)業(yè)就具有極大的發(fā)展?jié)摿Α?本文在國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目的支持下,開展關(guān)于發(fā)動(dòng)機(jī)的主動(dòng)再制造最佳時(shí)機(jī)抉擇的研究。針對(duì)目前如何確定發(fā)動(dòng)機(jī)再制造時(shí)機(jī)的問題,避免發(fā)生“提前再制造”和“過度使用再制造”現(xiàn)象,提出了基于曲軸磨損量變化的主動(dòng)再制造時(shí)機(jī)選擇評(píng)價(jià)模型。闡述了主動(dòng)再制造的核心理念,明確了主動(dòng)再制造與普通再制造之間的區(qū)別。對(duì)曲軸在工作當(dāng)中出現(xiàn)的偏磨現(xiàn)象進(jìn)行分析,得到服役時(shí)間與曲軸連桿軸頸磨損關(guān)系函數(shù)。從產(chǎn)品的全生命周期的角度分析了發(fā)動(dòng)機(jī)的能耗和環(huán)境排放影響因素,通過建立含軸頸磨損間隙的內(nèi)燃機(jī)虛擬仿真模型,得到含磨損間隙的內(nèi)燃機(jī)機(jī)構(gòu)動(dòng)態(tài)特性響應(yīng),并得到了在不同磨損值時(shí)發(fā)動(dòng)機(jī)服役過程對(duì)應(yīng)的能耗大小。運(yùn)用遺傳算法多目標(biāo)優(yōu)化方法對(duì)年均能耗-平均環(huán)境因素進(jìn)行優(yōu)化求解,得到考慮能耗及環(huán)境兩因素下的發(fā)動(dòng)機(jī)最佳主動(dòng)再制造時(shí)間。最后以某型號(hào)的單缸柴油機(jī)為例,將連桿軸頸的磨損作為參量,得到了在特定工況下的發(fā)動(dòng)機(jī)主動(dòng)再制造時(shí)間點(diǎn),驗(yàn)證了方法的有效性和可行性。
[Abstract]:At present, China is still in the stage of speeding up the process of industrialization. The rapid development of economy and society is highly dependent on energy consumption of resources. How to save natural resources and reduce environmental emissions while maintaining stable and good economic and social development has become a thorny problem in the process of industrialization. Therefore, in the industrial environment in this dilemma, the re-manufacturing industry has a great potential for development. With the support of the National Natural Science Foundation of China, this paper has carried out a study on the optimal timing of active remanufacturing of engine, aiming at the problem of how to determine the timing of engine remanufacturing. To avoid the phenomenon of "early remanufacturing" and "overuse remanufacturing", an evaluation model of active remanufacturing opportunity selection based on the change of crankshaft wear volume is put forward, and the core idea of active remanufacturing is expounded. The difference between active remanufacturing and ordinary remanufacturing is made clear. The phenomenon of eccentric wear of crankshaft in work is analyzed. The relationship function between service time and wear of crankshaft and connecting rod is obtained. From the point of view of the whole life cycle of the product, the influence factors of engine energy consumption and environmental emissions are analyzed, and the virtual simulation model of internal combustion engine with journal wear clearance is established. The dynamic response of internal combustion engine mechanism with wear clearance is obtained. The energy consumption corresponding to the engine service process with different wear values is obtained. The genetic algorithm multi-objective optimization method is used to optimize the annual energy consumption and average environmental factors. The optimal active remanufacturing time of the engine considering energy consumption and environment is obtained. Finally, taking a single cylinder diesel engine as an example, the wear of the connecting rod journal is taken as the parameter, and the active remanufacturing time point of the engine under specific working conditions is obtained. The validity and feasibility of the method are verified.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TK406

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