现代飞机发展趋势表明,复合材料在飞机结构中的应用越来越广,使用比例越来越高,复材的应用已成为衡量现代飞机先进性的重要标志之一。复合材料具有比强度高、比刚度大、材料性能可设计性等优点,已在航空领域得到较为广泛的应用。但在实际结构中,不可避免地会遇到各种应力集中情况,如开孔、加工缺陷等,使复合材料结构 The development trend of modern aircraft shows that the application of composite materials in aircraft structures is becoming more and more widespread and their use proportion is getting higher and higher. The application of complex materials has become an important symbol to measure the advanced nature of modern aircraft. Composites have the advantages of high specific strength, high specific stiffness and design of material properties. They have been widely used in the aviation field. However, in the actual structure, inevitably encounter a variety of stress concentrations, such as openings, machining defects, so that the composite structure