本文選題：蜂窩夾層結(jié)構(gòu) + 低速?zèng)_擊�。� 參考：《實(shí)驗(yàn)力學(xué)》2017年04期

【摘要】：通過低速?zèng)_擊試驗(yàn)和四點(diǎn)彎曲試驗(yàn),研究了鋁面板厚度對(duì)Nomex蜂窩夾層結(jié)構(gòu)抗沖擊能力和剩余強(qiáng)度的影響。結(jié)果表明:在沖擊荷載作用下,面板發(fā)生變形的區(qū)域大小隨面板厚度增加而變大,當(dāng)面板厚度大于0.5mm時(shí),變形區(qū)域直徑趨于穩(wěn)定;無論試件是否受到過沖擊,在彎曲載荷作用下,0.2mm厚面板發(fā)生芯格內(nèi)屈曲失穩(wěn),而其他厚度面板均發(fā)生格間失穩(wěn);對(duì)無沖擊損傷的結(jié)構(gòu),0.2mm厚面板彎曲強(qiáng)度顯著低于其他厚度面板;對(duì)含沖擊損傷的結(jié)構(gòu),0.2mm厚面板的剩余強(qiáng)度百分比最高。
[Abstract]:The effect of aluminum panel thickness on the impact resistance and residual strength of Nomex honeycomb sandwich structure was studied by low-speed impact test and four-point bending test. The results show that the deformation area of the slab increases with the thickness of the slab under impact load. When the thickness of the slab is greater than 0.5mm, the diameter of the deformation area tends to be stable, regardless of whether the specimen is subjected to overimpact or not. Under the action of bending load, the buckling instability of 0.2mm thick panel occurred in the core lattice, while that of the other thickness panels was unstable, and the bending strength of 0.2mm thick slab without impact damage was significantly lower than that of other thick panels. The percentage of residual strength of 0.2mm thick slab with impact damage is the highest.
【作者單位】： 南昌大學(xué)工程力學(xué)研究所;
【基金】：“江西省普通本科高校中青年教師發(fā)展計(jì)劃訪問學(xué)者專項(xiàng)資金”資助
【分類號(hào)】：TB33
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本文編號(hào)：2009825