Abstract In spite of the increasing use of FRP composites in bolted flange joints and the good knowledge of these structures and their material behavior the procedure used for their design is that of metallic flanges. There is a major concern to appropriately address the anisotropic behavior of composite materials in FRP flange design. Therefore, it is necessary to revisit this procedure by implementing a more suitable model to analyse the stresses and strains of FRP bolted flange joints. This paper presents an analytical model that treats FRP bolted flange joints integrity and tightness based on anisotropy and a flexibility analysis of all joint elements including the gasket, bolts and flanges. The theories that treats all parts of the flange are described in details. Finally, the developed analytical model is validated with experimental testing and numerical modeling of different size FRP flanges.

中文翻译：

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FRP 带毂法兰的解析建模

摘要 尽管在螺栓法兰接头中越来越多地使用 FRP 复合材料，并且对这些结构及其材料性能有了很好的了解，但用于其设计的程序是金属法兰。在 FRP 法兰设计中适当地解决复合材料的各向异性行为是一个主要问题。因此，有必要通过实施更合适的模型来分析 FRP 螺栓法兰接头的应力和应变，从而重新审视此过程。本文提出了一个分析模型，该模型基于各向异性处理 FRP 螺栓法兰接头的完整性和密封性，并对所有接头元件（包括垫圈、螺栓和法兰）进行了柔性分析。详细描述了处理法兰所有部分的理论。最后，