發(fā)布時(shí)間：2018-05-24 04:41

  本文選題：高壓儲(chǔ)氫氣瓶 + 碳纖維增強(qiáng)復(fù)合材料��； 參考：《浙江大學(xué)》2012年碩士論文

【摘要】：氫能作為新型清潔能源倍受各國(guó)重視,氫燃料電池汽車(chē)是氫能利用的一個(gè)重要發(fā)展方向。氫氣儲(chǔ)存作為氫能利用的一個(gè)難點(diǎn)急需攻克。高壓儲(chǔ)氫具有成本低、充放速度快、使用簡(jiǎn)便等優(yōu)點(diǎn),其中以鋁內(nèi)襯復(fù)合材料高壓儲(chǔ)氫氣瓶應(yīng)用最為廣泛。 復(fù)合材料氣瓶的設(shè)計(jì)涉及到漸進(jìn)失效分析、爆破壓力與安全系數(shù)等諸多因素,其中復(fù)合材料氣瓶的漸進(jìn)失效分析是所有研究工作的基礎(chǔ)。目前國(guó)內(nèi)外主要開(kāi)展了復(fù)合材料氣瓶宏觀漸進(jìn)失效分析,無(wú)法揭示復(fù)合材料的細(xì)觀失效機(jī)理,因此本文提出了一種復(fù)合材料氣瓶細(xì)觀-宏觀多尺度力學(xué)性能分析方法,主要研究?jī)?nèi)容包括以下三部分： 第一部分：氣瓶纖維增強(qiáng)復(fù)合材料層的細(xì)觀失效性能研究。首先提取出纖維增強(qiáng)復(fù)合材料細(xì)觀代表性體積單元-四邊形胞元模型；然后結(jié)合三種失效模式：纖維斷裂、基體開(kāi)裂和界面分離,研究了復(fù)合材料細(xì)觀拉伸載荷下漸進(jìn)失效過(guò)程,并計(jì)算單根纖維斷裂后的應(yīng)力重新分布情況；最后根據(jù)復(fù)合材料層合板拉伸試驗(yàn)來(lái)驗(yàn)證研究結(jié)果的正確性。 第二部分：運(yùn)用復(fù)合材料多尺度分析方法進(jìn)行細(xì)觀到宏觀的過(guò)渡�；趶�(fù)合材料漸進(jìn)均一化多尺度分析方法,提出細(xì)觀失效特性與宏觀剛度退化之間的分析模型,表征復(fù)合材料氣瓶宏觀剛度退化特性。 第三部分：鋁內(nèi)襯纖維增強(qiáng)復(fù)合材料儲(chǔ)氫氣瓶宏觀失效力學(xué)性能分析。首先,運(yùn)用ANSYS-APDL語(yǔ)言建立復(fù)合材料氣瓶參數(shù)化有限元模型。運(yùn)用上述細(xì)觀-宏觀剛度退化分析模型,基于ABAQUS-UMAT編程,對(duì)兩臺(tái)不同容積的氣瓶進(jìn)行宏觀力學(xué)性能分析,預(yù)測(cè)氣瓶宏觀漸進(jìn)失效特性,最后將氣瓶爆破壓力預(yù)測(cè)值與試驗(yàn)值進(jìn)行比較,驗(yàn)證提出的多尺度分析模型的準(zhǔn)確性。 本文特色：首先,建立了鋁內(nèi)襯碳纖維增強(qiáng)復(fù)合材料儲(chǔ)氫氣瓶封頭和筒體一體的參數(shù)化有限元模型。然后,提出了新的復(fù)合材料氣瓶細(xì)觀-宏觀損傷本構(gòu)模型,結(jié)合有限元分析,開(kāi)展了氣瓶細(xì)觀-宏觀多尺度失效力學(xué)性能研究。
[Abstract]:Hydrogen energy as a new clean energy has attracted much attention. Hydrogen fuel cell vehicle is an important development direction of hydrogen energy utilization. Hydrogen storage is a difficult point in hydrogen energy utilization. High pressure hydrogen storage has the advantages of low cost, fast charging and releasing speed, and easy to use, among which aluminum lined composite high pressure hydrogen storage gas cylinders are the most widely used. The design of composite gas cylinder involves many factors, such as progressive failure analysis, blasting pressure and safety factor, among which the progressive failure analysis of composite gas cylinder is the basis of all the research work. At present, macroscopical progressive failure analysis of composite gas cylinders has been carried out at home and abroad, which can not reveal the mechanism of composite materials' microscopical failure. Therefore, a new method of microscope-macro multi-scale mechanical properties analysis of composite gas cylinders is proposed in this paper. The main research contents include the following three parts: The first part: study on the micro-failure performance of cylinder fiber-reinforced composite layer. Firstly, the meso-typical volume unit of fiber reinforced composites, quadrilateral cell model, was extracted, and then three failure modes were combined: fiber fracture, matrix cracking and interface separation. The progressive failure process of composites under microtensile loading was studied, and the stress redistribution after fracture of single fiber was calculated. Finally, the correctness of the results was verified by tensile tests of composite laminated plates. The second part: using multi-scale analysis of composite materials to make the transition from micro-view to macro-scale. Based on the method of progressive homogenization multiscale analysis of composite materials, an analytical model between mesoscopic failure characteristics and macroscopic stiffness degradation is proposed to characterize the macroscopic stiffness degradation characteristics of composite gas cylinders. The third part: analysis of macro failure mechanical properties of aluminum lined fiber reinforced composite hydrogen storage gas cylinder. Firstly, the parameterized finite element model of composite gas cylinder is established by ANSYS-APDL language. The macroscopic mechanical properties of two gas cylinders with different volumes are analyzed by using the above meso-macro stiffness degradation analysis model based on ABAQUS-UMAT programming, and the macroscopic progressive failure characteristics of gas cylinders are predicted. Finally, the prediction value of cylinder blasting pressure is compared with the test value to verify the accuracy of the proposed multi-scale analysis model. The main features of this paper are as follows: firstly, a parameterized finite element model of aluminum lined carbon fiber reinforced composite gas cylinder head and cylinder is established. Then, a new meso-macro damage constitutive model for composite gas cylinders is proposed. The mechanical properties of the composite gas cylinders are studied with finite element analysis.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TB332;TH49

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