【摘要】：摩擦在日常生產(chǎn)實踐中其扮演著雙面角色,沒有它,人們“寸步難行”,有了它,磨損等一系列問題接踵而至,為了能夠駕馭這一匹“駿馬”,人們對其進行了長期的研究。隨著近幾年仿生學的發(fā)展,一部分科研工作者業(yè)已著手將仿生學和摩擦學研究結(jié)合,仿生非光滑表面結(jié)構(gòu)即在此大背景下面產(chǎn)生,現(xiàn)有的研究結(jié)果表明仿生非光滑表面結(jié)構(gòu)在提高摩擦學性能方面有著不凡的表現(xiàn)。 在仿生非光滑表面結(jié)構(gòu)的摩擦學性能方面的研究工作中,對于耐磨性研究則相對較少�，F(xiàn)有對仿生非光滑表面耐磨性能研究往往集中在理論、仿真和標準試驗機試驗的研究方面,很少根據(jù)實際工況條件展開相關(guān)研究；磨損變化伴隨著摩擦副的生命周期,現(xiàn)有在耐磨性方面的研究存在著試驗周期過短、數(shù)據(jù)采集量過少等問題；同時在對仿生非光滑表面耐磨機理的探討方面往往止于概念,例如其“儲屑”作用等,只是概念的提出,并未深入挖掘其內(nèi)在機理以及相關(guān)聯(lián)的作用。 本文針對上述研究現(xiàn)狀,圍繞往復(fù)運動下仿生非光滑表面耐磨性能展開相應(yīng)的研究,研究工作主要包括：1、研發(fā)一款適用于直線往復(fù)運動的專用摩擦磨損試驗機；2、進行試件摩擦磨損試驗并對試驗數(shù)據(jù)統(tǒng)計分析；3、探討往復(fù)運動下仿生非光滑表面耐磨作用機理。 首先,根據(jù)機械系統(tǒng)的創(chuàng)新設(shè)計方法原理,構(gòu)建了基于直線往復(fù)運動的摩擦磨損試驗機的功能結(jié)構(gòu)圖,形成一種新式直線往復(fù)式摩擦磨損試驗機的設(shè)計方案。對于摩擦磨損試驗機的機械系統(tǒng),進行了結(jié)構(gòu)設(shè)計、導軌選型等工作,并最終制造裝配出符合要求的摩擦磨損試驗機。 其次,擬定試驗方案并加工相關(guān)試驗試件,在充分準備的情況下開展往復(fù)運動下仿生非光滑表面的摩擦磨損試驗并對數(shù)據(jù)進行采集統(tǒng)計分析。 最后,就非光滑表面結(jié)構(gòu)“平整”作用、“儲屑”作用、對流體動力潤滑的影響、“變形”作用、結(jié)構(gòu)參數(shù)影響以及在全生命周期中的作用對往復(fù)運動下仿生非光滑表面耐磨作用機理進行了研究。 本文主要通過試驗與機理探討對往復(fù)運動下仿生非光滑表面耐磨性能進行研究,在具體的工作內(nèi)容中,試驗機的成功開發(fā)使得試驗環(huán)境更貼近于真實的使用工況；充足的試驗周期保證了試驗數(shù)據(jù)的采集量以及穩(wěn)定性,為后期作用機理探討提供了可靠的基礎(chǔ)數(shù)據(jù)；結(jié)合試驗數(shù)據(jù)及相關(guān)研究成果對仿生非光滑表面耐磨作用機理的深入探討對今后仿生非光滑表面的研究工作具有參考意義。
[Abstract]:Friction plays a double-sided role in daily production practice. Without it, people are difficult to walk, with it, wear and tear and so on a series of problems ensue, in order to be able to control this "horse", people have carried on a long-term research to it. With the development of bionics in recent years, some researchers have begun to combine bionics and tribology research, and the bionic non-smooth surface structure is produced under this background. The existing research results show that bionic non-smooth surface structure has a remarkable performance in improving tribological properties. In the research work of tribological properties of biomimetic non-smooth surface structure, there is relatively little research on wear resistance. The existing research on the wear resistance of bionic non-smooth surface is usually focused on the theoretical, simulation and standard testing machine tests, but few researches are carried out according to the actual operating conditions. The wear change is accompanied by the life cycle of friction pairs. There are some problems in the research of wear resistance, such as too short test cycle, too little data collection and so on. At the same time, the discussion on the wear-resisting mechanism of bionic non-smooth surface is often limited to the concept, such as its "chip storage" effect, etc., but the concept is only put forward, and the internal mechanism and the related function are not explored deeply. In view of the above-mentioned research situation, the corresponding research on the wear resistance of bionic non-smooth surface under reciprocating motion is carried out. The research work mainly includes: 1. A special friction and wear tester suitable for linear reciprocating motion is developed; 2. The friction and wear tests of the specimens are carried out and the experimental data are statistically analyzed. 3. The mechanism of wear resistance of bionic non-smooth surfaces under reciprocating motion is discussed. Firstly, according to the principle of innovative design method of mechanical system, the function and structure diagram of friction and wear tester based on linear reciprocating motion is constructed, and a new design scheme of linear reciprocating friction and wear tester is formed. For the mechanical system of friction and wear testing machine, the structure design, rail selection and so on are carried out. Finally, the friction and wear testing machine is manufactured and assembled in accordance with the requirements of friction and wear testing machine. Secondly, the test scheme is worked out and the related test pieces are processed. The friction and wear tests of the bionic non-smooth surface under reciprocating motion are carried out and the data are collected and analyzed. Finally, on the non-smooth surface structure "smooth" action, "chip storage" effect on hydrodynamic lubrication, "deformation" effect, The mechanism of wear resistance of bionic non-smooth surface under reciprocating motion is studied by the influence of structural parameters and its role in the whole life cycle. In this paper, the wear resistance of bionic and non-smooth surface under reciprocating motion is studied by experiment and mechanism discussion. In the concrete work, the successful development of testing machine makes the test environment more close to the real working condition. Sufficient test cycle ensures the collection and stability of test data, and provides reliable basic data for the discussion of the mechanism of action in later stage. Combined with the experimental data and related research results, the in-depth study on the mechanism of wear resistance of biomimetic non-smooth surfaces is of reference significance for the future research work on biomimetic non-smooth surfaces.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH117

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