复合材料−金属混合连接结构失效行为研究进展

Research progress on failure behaviors of composite-metal connection structures

  • 摘要: 随着复合材料的大规模应用,复合材料与金属结构的组合使用在工程中变得日益普遍,这对其接头设计提出了新的要求。分析了金属−复合材料混合结构螺栓连接强度和失效分析的研究现状,探讨了接头形式、装配间隙、几何参数、复合材料铺层设计、螺栓预紧力和服役环境等因素对混合连接结构力学性能和失效模式的影响规律,并详细讨论了温度与机械载荷共同作用下的失效机制。此外,还总结了金属−夹芯复合材料连接结构失效行为的相关研究。研究表明,目前发展的实验方法和数值模型可用于辅助复合材料−金属螺栓连接接头的设计,推动复合材料在舰船工程结构中的应用。

     

    Abstract: The widespread application of composite materials in engineering has made their combination with metal structures increasingly common, thereby necessitating new requirements for the joint design of composite and metal hybrid structures. This paper reviews the current status of research on the strength and failure analysis of bolted connections in metal-composite hybrid structures. It examines the effects of various factors—such as joint configuration, assembly gap, geometric parameters, composite layup design, bolt preload, and service environment—on the mechanical properties and failure modes of these hybrid connections. The paper also provides a detailed discussion on the failure mechanisms of metal-composite hybrid structures under the combined influence of thermal and mechanical loads. Additionally, it summarizes relevant research on the failure behavior of metal-sandwich composite connection structures. The findings indicate that existing experimental methods and numerical models can be utilized to assist in the design of composite-metal bolted joints, thereby facilitating the rapid development and application of composite materials in ship structural engineering.

     

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