本文選題：碳纖維復(fù)合材料 + LS-DYNA　； 參考：《江蘇科技大學(xué)》2017年碩士論文

【摘要】：纖維增強(qiáng)復(fù)合材料因其具有比剛度和比強(qiáng)度大,而比重小等特點(diǎn),在汽車(chē)、建筑、船舶制造、船舶防護(hù)、航空航天等行業(yè)得到了廣泛應(yīng)用。自上個(gè)世紀(jì)90年代以來(lái),歐美等國(guó)均將先進(jìn)復(fù)合材料在各種船舶結(jié)構(gòu)中的應(yīng)用,作為了未來(lái)的發(fā)展方向,因此可以預(yù)見(jiàn),先進(jìn)復(fù)合材料在船舶工業(yè)中將得到越來(lái)越多的應(yīng)用。因此了解并掌握其水下抗沖擊性能是非常有必要的,以此來(lái)充分發(fā)揮其自身的防護(hù)能力。本文首先使用有限元軟件LS-DYNA對(duì)水下爆炸模擬裝置進(jìn)行建模分析,通過(guò)對(duì)5A06鋁合金靶板進(jìn)行沖擊加載,來(lái)驗(yàn)證該模擬裝置對(duì)模擬水下爆炸沖擊波的可行性與可靠性。然后利用該水下爆炸模擬裝置對(duì)碳纖維復(fù)合材料板的水下抗沖擊動(dòng)力響應(yīng)進(jìn)行實(shí)驗(yàn)研究,對(duì)碳纖維復(fù)合材料板在不同強(qiáng)度的水下沖擊作用下的破壞形式進(jìn)行初步分類(lèi),并著重分析了水下沖擊波的峰值壓力與衰減時(shí)間分別對(duì)碳纖維復(fù)合材料板的破壞產(chǎn)生的不同影響。最后通過(guò)將碳纖維復(fù)合材料與5A06鋁合金和Q235鋼進(jìn)行對(duì)比,具體分析其抗沖擊性能與防護(hù)性能。本文主要得到如下結(jié)論:(1)水下爆炸模擬裝置能夠很好的模擬水下爆炸沖擊波,并且通過(guò)改變飛片的質(zhì)量和沖擊速度可以分別用來(lái)調(diào)整該水下爆炸沖擊波的衰減時(shí)間和峰值壓力。(2)碳纖維復(fù)合材料板的失效破壞可分為三類(lèi):在較低水下沖擊波壓力下,碳纖維復(fù)合材料板發(fā)生塑性變形,靶板表面無(wú)明顯破壞(I型);隨著沖擊波壓力的提高,靶板除了塑性變形以外,在靶板中部出現(xiàn)纖維分層,并且分層的纖維因受到拉伸作用而發(fā)生斷裂(II型);隨著沖擊波壓力的進(jìn)一步提高,靶板在固支邊界處發(fā)生纖維分層,并且分層的纖維發(fā)生剪切斷裂(III型)。(3)通過(guò)對(duì)不同沖擊波作用下靶板的破壞分析,得出水下沖擊波的峰值壓力主要影響靶板破壞的模式,而水下沖擊波的衰減時(shí)間則通過(guò)改變流固耦合參數(shù)來(lái)影響靶板破壞時(shí)的嚴(yán)重程度。(4)在相同面密度條件下,碳纖維復(fù)合材料的水下抗沖擊性能要高于5A06鋁合金和Q235鋼。
[Abstract]:Fiber reinforced composites have been widely used in automobile, building, ship manufacturing, ship protection, aerospace and other industries because of its high specific stiffness and specific strength, but small specific gravity. Since the 1990s, the application of advanced composite materials in various ship structures has been regarded as the future development direction in Europe and America, so it can be predicted that advanced composite materials will be applied more and more in the shipbuilding industry. Therefore, it is very necessary to understand and master its underwater impact resistance, so as to give full play to its own protection ability. In this paper, the finite element software LS-DYNA is used to model and analyze the underwater explosion simulation device. The feasibility and reliability of the simulation device for simulating underwater explosion shock wave are verified by the impact loading on the 5A06 aluminum alloy target plate. Then the underwater impact dynamic response of carbon fiber composite plate is experimentally studied by using the underwater explosion simulation device, and the failure modes of carbon fiber composite plate under different underwater impact strength are preliminarily classified. The effects of peak pressure and attenuation time of underwater shock wave on the failure of carbon fiber composite plate were analyzed. Finally, the impact and protective properties of carbon fiber composites were compared with those of 5A06 aluminum alloy and Q235 steel. The main conclusions of this paper are as follows: 1) underwater explosion simulation device can simulate underwater explosion shock wave very well. And by changing the mass and impact velocity of the flyer, the attenuation time and peak pressure of the underwater blast shock wave can be adjusted respectively.) the failure of the carbon fiber composite plate can be divided into three categories: under the lower underwater shock wave pressure, With the increase of shock wave pressure, fiber delamination occurs in the middle of the target plate, besides plastic deformation, with the increase of shock wave pressure, fiber delamination occurs in the middle of the target plate. Furthermore, the delamination of the laminated fibers occurs due to the tensile action, and with the further increase of the shock wave pressure, the fiber delamination occurs at the clamped boundary of the target plate. By analyzing the failure of target plate under different shock waves, it is concluded that the peak pressure of underwater shock wave mainly affects the failure mode of target plate. However, the attenuation time of underwater shock wave affects the damage severity of target plate by changing the fluid-solid coupling parameters.) at the same surface density, the underwater impact resistance of carbon fiber composite is higher than that of 5A06 aluminum alloy and Q235 steel.
【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：U668.5;TB332

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 任鵬;張偉;劉建華;黃威;;水下沖擊波作用的鋁合金蜂窩夾層板動(dòng)力學(xué)響應(yīng)研究[J];振動(dòng)與沖擊;2016年02期

2 危學(xué)兵;邱昌州;劉林祥;梁海峰;潘柳勝;梁慶欽;;長(zhǎng)玻纖增強(qiáng)ABS復(fù)合材料的動(dòng)態(tài)力學(xué)性能[J];塑料;2014年03期

3 石小紅;李成友;王婷婷;姜年朝;周光明;;復(fù)合材料層合板力學(xué)性能試驗(yàn)研究[J];工程與試驗(yàn);2014年01期

4 鄧立偉;陳新文;王海鵬;羅舒;;復(fù)合材料層合板低速?zèng)_擊后的力學(xué)性能試驗(yàn)研究[J];纖維復(fù)合材料;2013年03期

5 傅磊;;復(fù)合材料層合殼體結(jié)構(gòu)在艦船抗沖擊中的應(yīng)用[J];中國(guó)科技信息;2010年22期

6 湯文輝;冉憲文;徐志宏;張若棋;;強(qiáng)激光對(duì)靶材燒蝕效應(yīng)的數(shù)值模擬研究[J];航天器環(huán)境工程;2010年01期

7 吳始棟;;潛艇用復(fù)合材料的現(xiàn)狀與展望[J];中外船舶科技;2008年01期

8 王璐璐;關(guān)志東;;復(fù)合材料層板靜壓入破壞機(jī)制[J];復(fù)合材料學(xué)報(bào);2007年06期

9 陳家正;張曉兵;張琳;;高性能熱塑性復(fù)合材料的高溫力學(xué)性能[J];纖維復(fù)合材料;2007年02期

10 崔海坡;溫衛(wèi)東;崔海濤;;含孔復(fù)合材料層合板在壓縮載荷下的三維逐漸損傷[J];機(jī)械工程學(xué)報(bào);2006年08期

相關(guān)博士學(xué)位論文 前1條

1 孟利波;數(shù)字散斑相關(guān)方法的研究和應(yīng)用[D];清華大學(xué);2005年

相關(guān)碩士學(xué)位論文 前3條

1 李東葦;PVA纖維增強(qiáng)水泥基復(fù)合材料力學(xué)性能及板的爆炸動(dòng)力響應(yīng)分析[D];長(zhǎng)安大學(xué);2013年

2 陳眾迎;T300/AG80復(fù)合材料層合板力學(xué)性能的測(cè)試與分析[D];北京工業(yè)大學(xué);2010年

3 李鳳全;碳纖維復(fù)合材料制孔缺陷及對(duì)策的試驗(yàn)研究[D];大連理工大學(xué);2008年

，

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