胶接面纤维铺层角度对复合材料胶接应力和强度影响分析

发布时间：2019-03-09 11:09

【摘要】：为研究复合材料胶接面铺层对接头强度的影响,以单搭接接头为研究对象,通过铺层设计使接头的被粘物具有相同的拉伸模量和弯曲模量,但胶接面的铺层角度不同,使用有限元法对不同铺层的接头进行建模,分析接头胶接面和胶层的应力,引入Tsai-Wu失效因子对胶接面铺层进行评估。结果表明:胶接面铺层角度对应力分布有一定影响,0°胶接面会造成较大的胶层应力,但胶接面的应力和失效因子较小;90°铺层下胶层应力最小,但胶接面的应力和失效因子水平较高;45°下胶接面的失效因子和胶层应力水平介于两者之间。通过与实验结果对比,得出了胶接面铺层角度影响接头强度及破坏模式的一般性规律。
[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 掳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 掳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 掳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.
【作者单位】：武汉理工大学材料科学与工程学院;中国科学院工程热物理研究所中国科学院风能利用重点实验室;
【基金】：国家科技支撑计划课题(2012BAA01B02)
【分类号】：TB33

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