本文選題：粉末壓制 + 有限元��； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：水幕彈是一種水下使用的產(chǎn)品，由不同種類的粉末材料壓制而成，其最終產(chǎn)品決定著水幕彈的實(shí)際使用效果。本文以某種水幕彈粉末材料為研究對(duì)象，，在國(guó)內(nèi)外研究現(xiàn)狀分析和理論總結(jié)的基礎(chǔ)上，對(duì)其壓制工藝提出了較為合理的建議。并針對(duì)該種粉末成型，從壓制理論分析，模具模架設(shè)計(jì)制造，壓制工藝系統(tǒng)的設(shè)計(jì)等方面進(jìn)行了深入研究。本文主要研究?jī)?nèi)容與成果概括為如下幾個(gè)方面： 首先，介紹了粉體材料有限元分析的理論基礎(chǔ)，根據(jù)該粉末的物理化學(xué)特性，選擇適于該種藥劑粉末壓制的理論方法，以及其邊界條件的設(shè)置。應(yīng)用有限元分析軟件MSC.marc對(duì)壓制工藝流程特性進(jìn)行仿真，分析壓制各因素在實(shí)際生產(chǎn)中對(duì)藥劑結(jié)構(gòu)和性能的影響規(guī)律，以及這些因素的優(yōu)化。 其次，結(jié)合模具模架設(shè)計(jì)的理論和實(shí)際經(jīng)驗(yàn)，設(shè)計(jì)出一套適合本藥劑粉末壓制的模具模架。為實(shí)現(xiàn)粉末壓制的不同方式，整套模架設(shè)計(jì)成上模下壓，中�？缮舷吕瓌�(dòng)的方式，而且整套模架設(shè)計(jì)成一體式，便于安裝和拆卸。利用有限元分析軟件ANSYS對(duì)整套模具模架進(jìn)行靜力學(xué)和動(dòng)力學(xué)分析，使得模具模架既經(jīng)濟(jì)又滿足實(shí)驗(yàn)要求。 最后，搭建液壓動(dòng)力控制系統(tǒng)平臺(tái)。根據(jù)分析藥劑應(yīng)力的要求，壓制動(dòng)力系統(tǒng)采用液壓驅(qū)動(dòng)。液壓機(jī)機(jī)架采用C形結(jié)構(gòu)。上模位移采用數(shù)顯尺控制，定位精確，中模位移采用接近開關(guān)控制。整個(gè)壓制流程采用PLC程序控制，實(shí)現(xiàn)供料壓制，卸料的自動(dòng)化完成。觸摸屏操作和信息顯示，能夠方便操作和修改各控制參數(shù)。 本文研究方法與成果對(duì)水幕彈藥劑的開發(fā)與應(yīng)用具有較高的借鑒意義，并對(duì)藥劑的壓制工藝的研究具有一定的指導(dǎo)意義。
[Abstract]:Water curtain projectile is a kind of underwater used product, which is made of different kinds of powder materials. Its final product determines the actual application effect of water curtain bomb. In this paper, based on the analysis of the present research situation and theoretical summary at home and abroad, some reasonable suggestions on the pressing technology of a certain powder material of water curtain projectile are put forward. For this kind of powder forming, the analysis of pressing theory, the design and manufacture of die frame and the design of pressing technology system are studied. The main contents and achievements of this paper are summarized as follows: firstly, the theoretical basis of finite element analysis of powder materials is introduced, according to the physical and chemical properties of the powder, The theoretical method suitable for the powder compaction and the setting of its boundary conditions are selected. The finite element analysis software MSC.marc is used to simulate the characteristics of pressing process, and the influence of various factors on the structure and performance of the reagents in actual production is analyzed, as well as the optimization of these factors. Secondly, according to the theory and practical experience, a set of mould frame suitable for powder compaction is designed. In order to realize the different ways of powder compaction, the whole mould holder is designed as the mode of pressing down the upper die and the middle die can be pulled up and down, and the whole mould holder is designed as an integrated type, which is easy to install and disassemble. The finite element analysis software ANSYS is used to analyze the statics and dynamics of the whole mould frame, which makes the mould frame economic and meet the requirements of the experiment. Finally, the hydraulic power control system platform is built. According to the requirement of analyzing the stress of the medicament, the pressing power system is driven by hydraulic pressure. The hydraulic press frame adopts C-shaped structure. The upper die displacement is controlled by digital ruler, the position is accurate, and the middle mode displacement is controlled by proximity switch. The whole process of pressing is controlled by PLC program to realize the automation of feeding and unloading. Touch screen operation and information display, can easily operate and modify the control parameters. The research methods and achievements in this paper have a high reference significance for the development and application of water curtain ammunition agent, and also have certain guiding significance for the research of the reagents compaction technology.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TJ6;TB44

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