膠接面纖維鋪層角度對復合材料膠接應力和強度影響分析
發(fā)布時間:2019-03-09 11:09
【摘要】:為研究復合材料膠接面鋪層對接頭強度的影響,以單搭接接頭為研究對象,通過鋪層設計使接頭的被粘物具有相同的拉伸模量和彎曲模量,但膠接面的鋪層角度不同,使用有限元法對不同鋪層的接頭進行建模,分析接頭膠接面和膠層的應力,引入Tsai-Wu失效因子對膠接面鋪層進行評估。結果表明:膠接面鋪層角度對應力分布有一定影響,0°膠接面會造成較大的膠層應力,但膠接面的應力和失效因子較小;90°鋪層下膠層應力最小,但膠接面的應力和失效因子水平較高;45°下膠接面的失效因子和膠層應力水平介于兩者之間。通過與實驗結果對比,得出了膠接面鋪層角度影響接頭強度及破壞模式的一般性規(guī)律。
[Abstract]:In order to study the influence of composite adhesive overlay on joint strength, single lap joint is taken as the research object. The adhesive of the joint has the same tensile modulus and bending modulus through the ply design, but the ply angle of the adhesive surface is different, and the joint has the same tensile modulus and bending modulus, but the bonding joint has the same tensile modulus and bending modulus, but the ply angle is different. In this paper, the finite element method is used to model the joints of different layers, and the stress of the bonding surface and the adhesive layer are analyzed. The Tsai-Wu failure factor is introduced to evaluate the bonding layer. The results show that the angle of the bonding surface has a certain effect on the stress distribution. The 0 擄bonding surface will result in a larger adhesive layer stress, but the stress and failure factor of the adhesive surface are relatively small. The stress of adhesive layer under 90 擄layer is the least, but the stress and failure factor level of adhesive interface is higher, and the failure factor and layer stress level of adhesive interface at 45 擄is between them. Through the comparison with the experimental results, the general law of the influence of the angle of the adhesive overlay on the strength and failure mode of the joint is obtained.
【作者單位】: 武漢理工大學材料科學與工程學院;中國科學院工程熱物理研究所中國科學院風能利用重點實驗室;
【基金】:國家科技支撐計劃課題(2012BAA01B02)
【分類號】:TB33
本文編號:2437388
[Abstract]:In order to study the influence of composite adhesive overlay on joint strength, single lap joint is taken as the research object. The adhesive of the joint has the same tensile modulus and bending modulus through the ply design, but the ply angle of the adhesive surface is different, and the joint has the same tensile modulus and bending modulus, but the bonding joint has the same tensile modulus and bending modulus, but the ply angle is different. In this paper, the finite element method is used to model the joints of different layers, and the stress of the bonding surface and the adhesive layer are analyzed. The Tsai-Wu failure factor is introduced to evaluate the bonding layer. The results show that the angle of the bonding surface has a certain effect on the stress distribution. The 0 擄bonding surface will result in a larger adhesive layer stress, but the stress and failure factor of the adhesive surface are relatively small. The stress of adhesive layer under 90 擄layer is the least, but the stress and failure factor level of adhesive interface is higher, and the failure factor and layer stress level of adhesive interface at 45 擄is between them. Through the comparison with the experimental results, the general law of the influence of the angle of the adhesive overlay on the strength and failure mode of the joint is obtained.
【作者單位】: 武漢理工大學材料科學與工程學院;中國科學院工程熱物理研究所中國科學院風能利用重點實驗室;
【基金】:國家科技支撐計劃課題(2012BAA01B02)
【分類號】:TB33
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