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三维有限元分析的分层与弹性销外单轴荷载作用下复合镀层

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应力分析在结构完整性和优化中扮演重要的角色。前压力评估有助于更好的设计产品。复合材料得到广泛使用在工业和家庭应用程序由于其强度重量比。特别是在飞机工业、复合材料的使用更由于其优势传统的材料。正交异性材料制成的复合材料主要是在不平等的强度在不同的方向。复合材料分层和脱胶的缺点由于债券材料相比,父材料较弱。所以正确的分析应该是做过复合关节在实际条件下使用它。在目前的工作,组合板与弹性销被认为是使用有限元软件Ansys进行分析。最初建立了几何使用Ansys软件使用自顶向下方法有不同的布尔操作。建模对象与三维网状层元素solid46复合板和结构三维固体元素Solid45销材料。 Various combinations are considered to find the strength of the composite joint under uniaxial loading conditions. Due to symmetry of the problem, only quarter geometry is built and results are presented for full model using Ansys expansion options. The results show effect of pin diameter on the joint strength. Here the deflection and load sharing of the pin is increasing and other parameters like overall stress, pin stress and contact pressure is reducing due to lesser load on the plate material. Further material effect shows, higher young modulus material has little deflection, but other parameters are increasing. Interference analysis shows increasing of overall stress, pin stress, contact stress along with pin bearing load. This increase should be understood properly for increasing the load carrying capacity of the joint. Generally every structure is preloaded to increase the compressive stress in the joint to increase the load carrying capacity. But the stress increase should be properly analysed for composite due to its delamination and debonding effects due to failure of the bond materials. When results for an isotropic combination is compared with composite joint, isotropic joint shows uniformity of the results with lesser values for all parameters. This is mainly due to applied layer angle combinations. All the results are represented with necessasary pictorial plots.

Raghavendra N, Shabbir Ahmed R M

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