民用飞机M21E预浸料复合材料帽型长桁压缩性能研究  

Research on compressive properties of M21E prepreg composite map stringer of civil aircraft

作　　者：朱正义[1] Zhu Zhengyi(Shanghai Aircraft Design and Research Institute,Shanghai,201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《机械设计与制造工程》2024年第2期67-72,共6页Machine Design and Manufacturing Engineering

摘　　要：为了给复合材料飞机长桁结构选型提供试验数据支持,对民用飞机M21E预浸料复合材料帽型长桁压缩性能进行了研究。研究了不带包覆层、一半带包覆层和全部带包覆层3种不同工艺构型长桁的压缩特性,试验结果表明包覆层工艺对长桁的承载能力有很大的提升;对3种工艺构型的试验件分别引入了冲击损伤,试验结果表明帽型长桁底部蒙皮中心的初始损伤大大降低了整个结构的屈曲载荷和压损性能。最后通过试验与帽型长桁工程算法分析、有限元分析的对比,验证了复合材料帽型长桁压缩强度分析方法的准确性。In order to provide the experimental data support for the selection of composite aircraft stringer structure,the compressive properties of M21E prepreg composite map stringer of civil aircraft are studied.The compression characteristics of three different process configurations of stringers without cladding,half cladding and all cladding are analyzed.The test results show that the cladding process greatly improves the bearing capacity of the stringer;The impact damage is introduced into the test pieces of the three process configurations respectively.According to the test results,the initial damage in the bottom skin center of the map stringer greatly reduces the buckling load and pressure loss performance of the whole structure.The compressive strength analysis method of composite cap truss is verified by comparing the test with the engineering algorithm analysis and finite element analysis of cap truss.

关 键 词：民用飞机 M21E预浸料 帽型长桁 冲击损伤 

分 类 号：V258[一般工业技术—材料科学与工程]