本文選題：復(fù)合材料　切入點(diǎn)：蜂窩結(jié)構(gòu)　出處：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：復(fù)合材料蜂窩結(jié)構(gòu)是一種具有高比強(qiáng)度、高比剛度的新型輕質(zhì)復(fù)合材料夾芯結(jié)構(gòu),廣泛應(yīng)用于各種領(lǐng)域。但是由于復(fù)合材料蜂窩結(jié)構(gòu)在低密度區(qū)域容易發(fā)生彈性屈曲失效,導(dǎo)致結(jié)構(gòu)的平壓性能較低,結(jié)構(gòu)的承載能力不夠好;同時(shí)由于面板和芯子之間存在粘接強(qiáng)度不足的問(wèn)題,導(dǎo)致復(fù)合材料蜂窩結(jié)構(gòu)的剪切性能、彎曲性能等較低。本文針對(duì)以上問(wèn)題,采用多級(jí)結(jié)構(gòu)設(shè)計(jì)思想,將高性能PMI泡沫加入到單向增強(qiáng)碳纖維復(fù)合材料之間,對(duì)多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)進(jìn)行了制備,并研究了結(jié)構(gòu)的力學(xué)性能。主要研究?jī)?nèi)容如下:第一章介紹了復(fù)合材料夾芯結(jié)構(gòu)的研究背景、國(guó)內(nèi)外研究現(xiàn)狀以及本文的主要研究?jī)?nèi)容。第二章介紹了多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的制備工藝流程。其中主要采用嵌鎖組裝工藝制備多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的芯子。第三章研究了多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的平壓性能,主要包括多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)平壓性能的理論預(yù)報(bào)與試驗(yàn)驗(yàn)證。通過(guò)理論研究與試驗(yàn)驗(yàn)證發(fā)現(xiàn)合適的PMI泡沫能夠使結(jié)構(gòu)的平壓性能達(dá)到最佳,根據(jù)這一點(diǎn),得到了平壓性能達(dá)到最佳的多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)設(shè)計(jì)方案。第四章在第三章對(duì)多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)平壓性能進(jìn)行研究的基礎(chǔ)上,研究了經(jīng)歷了循環(huán)加載之后的多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的平壓性能的變化情況,為工程上的應(yīng)用提供了一定的參考。第五章對(duì)多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的三點(diǎn)彎曲性能進(jìn)行了研究,主要包括理論預(yù)報(bào)與試驗(yàn)驗(yàn)證。通過(guò)理論研究對(duì)多級(jí)復(fù)合材料蜂窩結(jié)構(gòu)的失效模式進(jìn)行了預(yù)報(bào),繪制了失效模式機(jī)制圖,并通過(guò)三點(diǎn)彎曲試驗(yàn)對(duì)理論預(yù)報(bào)結(jié)果進(jìn)行了驗(yàn)證。
[Abstract]:Composite honeycomb structure is a new type of lightweight composite sandwich structure with high specific strength and high specific stiffness, which is widely used in various fields. However, composite honeycomb structure is prone to elastic buckling failure in low density region. As a result, the flat compression property of the structure is low, the bearing capacity of the structure is not good enough, and the shear behavior of the composite honeycomb structure is caused by the problem of insufficient bonding strength between the panel and the core. In view of the above problems, the high performance PMI foam was added to the unidirectional reinforced carbon fiber composites, and the honeycomb structure of the multistage composites was prepared. The main contents are as follows: chapter 1 introduces the research background of composite sandwich structure. In the second chapter, the fabrication process of multistage composite honeycomb structure is introduced, in which the core of multistage composite honeycomb structure is prepared by interlocking assembly process. In chapter 3, the flat compression properties of multistage composite honeycomb structures are studied. This paper mainly includes the theoretical prediction and experimental verification of the flat compressive properties of multistage composite honeycomb structures. Through theoretical research and experimental verification, it is found that the proper PMI foam can make the structure achieve the best pressure performance, according to this point, The design scheme of multistage composite honeycomb structure with optimum flat compression performance is obtained. In chapter 4, on the basis of the research on the flat compression performance of multistage composite honeycomb structure in chapter 3, In this paper, the variation of the compressive properties of multistage composite honeycomb structures after cyclic loading is studied, which provides a certain reference for engineering applications. In chapter 5, the three-point bending properties of multistage composite honeycomb structures are studied. The failure mode of multistage composite honeycomb structure is predicted by theoretical research, and the failure mode mechanism diagram is drawn, and the theoretical prediction results are verified by three-point bending test.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TB33

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 江大志;鞠蘇;張鑒煒;肖加余;;復(fù)合材料結(jié)構(gòu)輕量化方法及技術(shù)[J];玻璃鋼/復(fù)合材料;2014年09期

2 ;Mechanics of advanced fiber reinforced lattice composites[J];Acta Mechanica Sinica;2010年06期

3 范華林;金豐年;方岱寧;;格柵結(jié)構(gòu)力學(xué)性能研究進(jìn)展[J];力學(xué)進(jìn)展;2008年01期

4 杜善義;;先進(jìn)復(fù)合材料與航空航天[J];復(fù)合材料學(xué)報(bào);2007年01期

5 范華林;楊衛(wèi);王斌;閻勇;傅強(qiáng);方岱寧;莊茁;;Design and Manufacturing of a Composite Lattice Structure Reinforced by Continuous Carbon Fibers[J];Tsinghua Science and Technology;2006年05期

6 富明慧,尹久仁;蜂窩芯層的等效彈性參數(shù)[J];力學(xué)學(xué)報(bào);1999年01期

相關(guān)博士學(xué)位論文 前1條

1 張國(guó)旗;復(fù)合材料點(diǎn)陣結(jié)構(gòu)吸能特性和抗低速?zèng)_擊性能研究[D];哈爾濱工業(yè)大學(xué);2014年

相關(guān)碩士學(xué)位論文 前1條

1 趙景麗;蜂窩夾層結(jié)構(gòu)復(fù)合材料的性能研究[D];西北工業(yè)大學(xué);2002年

，

本文編號(hào)：1669725