高温下碳纤维复合材料动态力学性能及相关失效准则的研究进展

Research Progress on High-Temperature Dynamic Mechanical Properties and Related Failure Criteria of Carbon Fiber Composites

研究碳纤维复合材料的动态力学行为及其失效准则对于理解其性能至关重要,可以更好地预测材料在极端条件下的表现,从而提高其在实际应用中的可靠性和安全性。从力学行为特性和失效准则着手,归纳和总结了碳纤维复合材料在高温下的动态力学性能,指出应变速率和温度对材料动态力学行为的影响是当前研究的重点与难点。总结了现有的复合材料失效准则,并讨论了这些准则的适用性差异。指出温度和应变速率耦合环境下的力学行为研究、相关失效准则建立和基于多尺度分析方法数值模拟是今后研究的重点。

The study of dynamic mechanical properties of carbon fiber composites and their failure criteria is essential for understanding and optimizing their properties,which can better predict the behavior of materials under extreme conditions,and improve the reliability and security in practical applications.Dynamic mechanical properties of carbon fiber composites at high temperatures are summarized from mechanical behaviour characteristics and failure criteria.It is pointed out that the influence of strain rate and temperature on dynamic mechanical behaviour of materials is the focus and difficulty of current research.Existing failure criteria for composites are summarized and differences in the applicability of these criteria are discussed.The study of mechanical behaviour under the coupled environment of temperature and strain rate,the establishment of relevant failure criteria and numerical simulation based on multiscale analysis methods are the focus of future research.