An innovative type of carbon fiber-reinforced composite corrugated rib sandwich panel floor structure was designed and produced for a high-speed train equipment compartment, complying with the applicable railway car body structural requirements and railway fire protection standards. Using the finite element analysis (FEA) method there was conducted a four-step laminate design optimization for adjusting the mechanical properties of both the skin and corrugated ribs parts. A prototype was manufactured by an autoclave process and successfully submitted to static and fatigue mechanical testing for evaluation of the strength and stiffness of this structure as well as for correlation with the FEA model. It was finally concluded that requirements were met for this lightweight design and the weight reduction was approximately of 35.7% in comparison to the conventional metal structure. The research shown in this article does not only provide an effective carbon fiber composite equipment design scheme for the floor panel for high-speed trains, but also entails a methodical design process for other applications of carbon fiber composite structural parts.

中文翻译：

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用于高速列车的创新碳纤维增强复合夹芯板的层压板设计、优化和测试

为高速列车设备舱设计并生产了一种创新型碳纤维增强复合波纹肋夹芯板楼盖结构，符合适用的铁路车体结构要求和铁路防火标准。使用有限元分析 (FEA) 方法进行了四步层压板设计优化，以调整蒙皮和波纹肋部件的机械性能。原型是通过高压釜工艺制造的，并成功地进行了静态和疲劳力学测试，以评估该结构的强度和刚度以及与 FEA 模型的相关性。最终得出的结论是，这种轻量化设计满足了要求，重量减轻了大约 35。7% 与传统金属结构相比。本文所展示的研究不仅为高速列车地板面板提供了有效的碳纤维复合材料设备设计方案，而且还为碳纤维复合材料结构件的其他应用提供了有条不紊的设计过程。