本文選題：微結(jié)構(gòu)　切入點(diǎn)：切削仿真　出處：《山東大學(xué)》2012年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：近年來(lái),隨著航空航天、信息處理、生物醫(yī)學(xué)以及微電子技術(shù)的發(fā)展,人們對(duì)具有特定功能微結(jié)構(gòu)表面的需求越來(lái)越廣泛,受應(yīng)用需求驅(qū)動(dòng)的影響,目前,國(guó)內(nèi)外針對(duì)微結(jié)構(gòu)功能表面制造技術(shù)的研究也在不斷深入,同時(shí)新的加工方式也在不斷出現(xiàn),因微切削加工技術(shù)具有加工材料范圍廣泛、加工成本低、生產(chǎn)效率高等諸多優(yōu)點(diǎn),從而成為微結(jié)構(gòu)功能表面的主要加工技術(shù)之一。本文針對(duì)微結(jié)構(gòu)功能表面的具體應(yīng)用,通過(guò)微切削實(shí)驗(yàn)結(jié)合有限元仿真,研究了切削參數(shù)對(duì)微結(jié)構(gòu)表面質(zhì)量的影響及微切削過(guò)程中尺度效應(yīng)的存在。具體研究?jī)?nèi)容如下： 微切削加工的有限元建模及仿真�；趹�(yīng)變梯度塑性理論,針對(duì)以經(jīng)典連續(xù)介質(zhì)力學(xué)為理論基礎(chǔ)的傳統(tǒng)的切削仿真模型難以反應(yīng)微切削過(guò)程中尺度效應(yīng)對(duì)工件材料變形的影響,應(yīng)用微觀力學(xué)應(yīng)變梯度理論,以商用有限元軟件ABAQUS/Explicit為平臺(tái),對(duì)傳統(tǒng)的Johnson-Cook(JC)材料本構(gòu)模型進(jìn)行了修正,建立了反應(yīng)微切削條件下的切削仿真模型,并借助該模型分析了微切削條件下刃口圓弧半徑和切削厚度對(duì)第一變形區(qū)切削應(yīng)力、等效塑性應(yīng)變及切屑變形的影響,通過(guò)對(duì)比宏觀切削,驗(yàn)證了微切削過(guò)程中材料尺度效應(yīng)的存在。 微切削加工的表面質(zhì)量研究。以微結(jié)構(gòu)信息存儲(chǔ)為應(yīng)用背景,針對(duì)在微結(jié)構(gòu)功能表面中應(yīng)用較廣泛的微型溝槽結(jié)構(gòu),通過(guò)微溝槽切削實(shí)驗(yàn),對(duì)比了不同切削參數(shù)下切屑的形貌,研究了切削深度和切削速度對(duì)微結(jié)構(gòu)形狀精度及表面質(zhì)量的影響：切削深度越小,切屑連續(xù)性越差,刀尖圓弧半徑對(duì)微溝槽成型的影響越明顯,切削速度的提高可以有效的提高微溝槽表面質(zhì)量但會(huì)降低其形狀精度。 微結(jié)構(gòu)功能表面在信息儲(chǔ)存中的應(yīng)用研究。針對(duì)機(jī)械產(chǎn)品在生命周期不同階段加工和使用信息的記錄和存儲(chǔ),提出了適用于機(jī)械產(chǎn)品信息存儲(chǔ)的方式,運(yùn)用通用的信息編碼格式,結(jié)合微切削技術(shù),在工件表面實(shí)現(xiàn)了能夠用于信息儲(chǔ)存的不等間距微溝槽結(jié)構(gòu)的加工。
[Abstract]:In recent years, with the development of aerospace, information processing, biomedicine and microelectronic technology, people have more and more extensive demand for microstructural surfaces with specific functions, which is influenced by the application demand. At home and abroad, the research of micro-structure functional surface manufacturing technology is also deepening, at the same time, new processing methods are emerging, because micro-machining technology has many advantages, such as wide range of processing materials, low processing cost, high production efficiency and so on. Therefore, it has become one of the main machining techniques of microstructural functional surface. In this paper, according to the specific application of microstructural functional surface, the micromachining experiment is combined with finite element simulation. The influence of cutting parameters on the surface quality of microstructure and the existence of mesoscale effect in the process of micromachining are studied. Finite element modeling and simulation of micromachining. Based on strain gradient plasticity theory, It is difficult for the traditional cutting simulation model based on classical continuum mechanics to reflect the effect of mesoscale effect on the deformation of workpiece material during micro cutting. The strain gradient theory of micro mechanics is applied and the commercial finite element software ABAQUS/Explicit is used as the platform. The traditional Johnson-Cook-JC material constitutive model is modified, and the cutting simulation model under reactive micro-cutting condition is established. The cutting stress in the first deformation region is analyzed by the cutting radius and thickness of the cutting edge under the micro-cutting condition. The effect of equivalent plastic strain and chip deformation is verified by comparing the macroscopic cutting. Research on the surface quality of micromachining. Based on the application background of microstructural information storage, aiming at the micro-grooves which are widely used on the functional surfaces of microstructures, the experiments of micro-grooves cutting are carried out. The effects of cutting depth and cutting speed on the shape accuracy and surface quality of microstructures were studied. The smaller the cutting depth, the worse the chip continuity. The more obvious the influence of the arc radius of the knife tip on the shaping of the micro-groove, the higher the cutting speed is, the more the surface quality of the micro-groove can be improved, but the shape accuracy will be reduced. Research on the Application of Microstructure functional Surface in Information Storage. Aiming at the recording and storage of machining and using information in different stages of the life cycle of mechanical products, a method suitable for information storage of mechanical products is proposed. Using the general information coding format and the micromachining technology, the unequal spacing micro-groove structure which can be used for information storage is realized on the workpiece surface.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TP333

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 湯勇;潘敏強(qiáng);王清輝;;表面反應(yīng)功能結(jié)構(gòu)制造領(lǐng)域的研究現(xiàn)狀及發(fā)展趨勢(shì)[J];中國(guó)表面工程;2010年02期

2 劉戰(zhàn)強(qiáng);雷原忠;;微切削加工技術(shù)[J];工具技術(shù);2006年03期

3 楊元華,陳時(shí)錦,程凱,孫西芝;超精密機(jī)械加工技術(shù)在微光學(xué)元件制造中的應(yīng)用[J];航空精密制造技術(shù);2005年04期

4 楊元華;陳時(shí)錦;段耀凱;程凱;;微結(jié)構(gòu)表面超精密切削加工的關(guān)鍵技術(shù)[J];航空精密制造技術(shù);2007年03期

5 楊元華;陳時(shí)錦;孫濤;趙清亮;程凱;;微結(jié)構(gòu)表面金剛石車(chē)削加工過(guò)程中快速伺服刀架的控制[J];航空學(xué)報(bào);2008年01期

6 楊欣,鞏馬理,黃磊,張海濤,閆平;光盤(pán)存儲(chǔ)中調(diào)制技術(shù)的研究進(jìn)展[J];激光與紅外;2004年03期

7 鄭黎俊,烏學(xué)東,樓增,吳旦;表面微細(xì)結(jié)構(gòu)制備超疏水表面[J];科學(xué)通報(bào);2004年17期

8 李榮彬,杜雪,張志輝,高棟,趙偉明;光學(xué)微結(jié)構(gòu)的超精密加工技術(shù)[J];納米技術(shù)與精密工程;2003年01期

9 唐玉蘭,梁迎春,程凱,董申;單晶銅納米切削過(guò)程的研究[J];納米技術(shù)與精密工程;2004年02期

10 楊元華,陳時(shí)錦,程凱;微結(jié)構(gòu)光學(xué)元件的應(yīng)用與制造(英文)[J];納米技術(shù)與精密工程;2005年01期

相關(guān)博士學(xué)位論文 前5條

1 成群林;航空整體結(jié)構(gòu)件切削加工過(guò)程的數(shù)值模擬與實(shí)驗(yàn)研究[D];浙江大學(xué);2006年

2 李紅濤;介觀尺度材料力學(xué)性能建模及微銑削工藝優(yōu)化研究[D];上海交通大學(xué);2008年

3 吳繼華;基于應(yīng)變梯度塑性理論的正交微切削變形研究[D];山東大學(xué);2009年

4 周軍;鋁合金7050-T7451微切削加工機(jī)理及表面完整性研究[D];山東大學(xué);2010年

5 宋文龍;微池自潤(rùn)滑刀具的研究[D];山東大學(xué);2010年

相關(guān)碩士學(xué)位論文 前3條

1 盧猛;微結(jié)構(gòu)功能表面金剛石超精密加工工藝的研究[D];哈爾濱工業(yè)大學(xué);2007年

2 郭兵;微結(jié)構(gòu)表面的金剛石飛切加工研究[D];哈爾濱工業(yè)大學(xué);2008年

3 鄭顯良;表面織構(gòu)化活塞環(huán)的摩擦學(xué)性能研究[D];北京交通大學(xué);2010年

，

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