本文選題：微操作　切入點：彎月面　出處：《哈爾濱工業(yè)大學(xué)》2012年碩士論文

【摘要】：隨著科學(xué)技術(shù)的進步人類的操作領(lǐng)域逐漸從宏觀擴展到了微觀，，如微機電系統(tǒng)（MEMS）裝配中，零件特征尺寸在微米量級，并且包含復(fù)雜的結(jié)構(gòu)。當構(gòu)件或系統(tǒng)的尺寸小于1mm時，與物體表面相關(guān)的表面力趨向大于體積力，尺度效應(yīng)和表面效應(yīng)逐漸凸顯。很多情況下將不能通過利用重力來實現(xiàn)被操作物體的釋放，需要對微操作過程中的粘著機理和模型進行研究。 基于利用固-液界面間的粘著力進行微操作的方案，本文對微操作對象間粘著作用進行研究來預(yù)測和控制微操作中操作工具與被操作物體間的粘著力，為利用粘著力設(shè)計微操作工具提供理論基礎(chǔ)。 首先，針對微尺度固體和液體特征進行模擬分析和簡化，建立微操作中典型平板-平板、球-平板構(gòu)件配置下存在液體介質(zhì)時的界面粘著力模型。包括兩種配置的靜態(tài)毛細作用力的計算模型及動態(tài)粘性力的計算模型。針對微操作中典型的拾取、轉(zhuǎn)移和釋放過程，分析兩種配置中彎月面的斷裂距離。 其次，利用FLUENT軟件對微尺度固-液界面處粘著力作用力模型進行仿真分析，模擬模型中操作工具向上運動時的彎月面動態(tài)變化過程。分別對靜態(tài)毛細作用力和動態(tài)粘性力的影響參數(shù)進行分析，獲取微操作過程中各參數(shù)對粘著力的影響規(guī)律。 最后，建立面向微操作的粘著力測試系統(tǒng)，選擇不同材料的微物體，研究兩固體分離距離、固體形狀、材料等參數(shù)對兩固體受到的作用力和輪廓形狀的影響。與所建立理論模型進行比較，驗證所建立模型的可靠性。通過研究微操作過程中工具與被操作物體之間存在液體介質(zhì)時的粘著力及各參數(shù)對粘著力的影響，為利用固-液界面處的粘著力設(shè)計微操作方案和工具提供了理論依據(jù)。
[Abstract]:With the development of science and technology, the field of human operation has gradually expanded from macroscopic to microscopic. For example, in MEMS assembly, the feature dimensions of parts are in the order of micron and contain complex structures. When the dimensions of components or systems are smaller than 1mm, The surface forces associated with the surface of the object tend to be larger than the volume force, and the scale effect and the surface effect gradually become prominent. In many cases, it will not be possible to use gravity to realize the release of the operated object. The adhesion mechanism and model of micromanipulation need to be studied. Based on the scheme of micromanipulation based on the adhesion force between solid and liquid interface, the adhesion between micromanipulation objects is studied in this paper to predict and control the adhesion between the tool and the operated object. To provide a theoretical basis for the use of adhesion to design micromanipulation tools. First of all, the characteristics of microscale solids and liquids are simulated and simplified, and a typical plate-plate in microoperation is established. The interface adhesion force model with liquid medium in the configuration of spherical plate member. It includes two kinds of static capillary force calculation model and dynamic viscosity force calculation model. In view of the typical picking, transferring and releasing process in microoperation, The fracture distance of meniscus in two configurations is analyzed. Secondly, the adhesion force model at the microscale solid-liquid interface is simulated by using FLUENT software. The dynamic change process of meniscus is simulated when the tool moves upward in the model. The influence parameters of static capillary force and dynamic viscosity force are analyzed respectively to obtain the influence of each parameter on the adhesion force in the process of micro-operation. Finally, a micromanipulation oriented adhesion testing system is established. The separation distance and shape of the two solids are studied by selecting different materials. The influence of material and other parameters on the force and contour shape of two solids is compared with the established theoretical model. To verify the reliability of the established model. By studying the adhesion force between the tool and the operated object in the presence of liquid medium and the influence of the parameters on the adhesion force, It provides a theoretical basis for the design of microoperation schemes and tools by using the adhesion force at the solid-liquid interface.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH-39

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相關(guān)期刊論文 前1條

1 王學(xué)衛(wèi);于洋;;重力影響下板間液橋斷裂距離研究[J];實驗力學(xué);2012年01期

本文編號：1682696