本文選題：復(fù)合材料 + Glare層板　； 參考：《航空材料學(xué)報(bào)》2017年01期

【摘要】：為了探索Glare層板的成形性能特點(diǎn),采用單向拉伸實(shí)驗(yàn)和三點(diǎn)彎曲實(shí)驗(yàn),分析研究了Glare 2A,Glare 2B和Glare 3層板的基本成形性能,并借助掃描電子顯微鏡分析了Glare層板的失效特征。結(jié)果表明:纖維鋪層方向?qū)Σ牧系某尚涡阅艽嬖陲@著影響,Glare 2A層板抵抗塑性變形的能力強(qiáng),且難以發(fā)生厚向變形:采用σ=σy+Kεn硬化模型擬合真實(shí)應(yīng)力-應(yīng)變曲線,其相關(guān)系數(shù)最大,擬合結(jié)果最好:Glare 2A的彎曲回彈量最大,其彎曲破壞時(shí),內(nèi)表層受壓應(yīng)力,以皺縮和壓縮斷裂為主,外表層受拉應(yīng)力,以纖維拉伸斷裂和分層為主;對(duì)于Glare 2B層板,其彎曲回彈量最小,主要以基體破壞為主:通過滾彎成形驗(yàn)證了實(shí)驗(yàn)所得結(jié)果的準(zhǔn)確性。
[Abstract]:In order to explore the formability characteristics of Glare laminates, the basic formability of Glare _ 2Ag-Glare _ 2B and Glare _ 3 laminates were studied by uniaxial tensile test and three-point bending test, and the failure characteristics of Glare laminates were analyzed by means of scanning electron microscopy (SEM). The results show that the fiber laying direction has a significant effect on the formability of the material, and the plastic deformation resistance of Glare 2A laminates is strong, and it is difficult to produce thick deformation. The true stress-strain curve is fitted by 蟽 = 蟽 y K 蔚 n hardening model. The correlation coefficient is the largest and the fitting result is the best. When the bending failure occurs, the compressive stress of the inner surface layer is mainly shrinkage and compression fracture, and the tensile stress of the outer layer is mainly the fiber tensile fracture and delamination. For Glare 2B laminates, the flexural springback is the smallest and the matrix failure is the main factor. The accuracy of the experimental results is verified by rolling forming.
【作者單位】： 南京航空航天大學(xué)材料科學(xué)與技術(shù)學(xué)院;上海飛機(jī)制造有限公司;
【基金】：國(guó)家商用飛機(jī)制造工程技術(shù)研究中心創(chuàng)新基金資助項(xiàng)目(SAMC 13-JS-15-032) 江蘇省普通高校研究生科研創(chuàng)新計(jì)劃資助項(xiàng)目(KYLX_0259) 江蘇省先進(jìn)結(jié)構(gòu)材料與應(yīng)用技術(shù)重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目(ASMA201401) 國(guó)家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃資助項(xiàng)目(201510287033) 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目(PAPD)
【分類號(hào)】：TB333

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本文編號(hào)：1951745