基于不同构型辅助梁的民机尾翼前缘设计与抗鸟撞性能研究  

Design and bird-strike resistance performance research of civil aircraft tail leading edge using different auxiliary spars

作　　者：高俊 吴志斌[1,2] 孔令勇 李琪[1] GAO Jun;WU Zhibin;KONG Lingyong;LI Qi(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China;School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]上海飞机设计研究院,上海201210 [2]西北工业大学航空学院,西安710072

出　　处：《振动与冲击》2021年第8期237-246,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(51738001,51421005)。

摘　　要：民用飞机对尾翼前缘的抗鸟撞性能有很高要求。某型民机尾翼前缘原始辅助梁为铝合金机加件,为了优化其抗鸟撞性能,提出了两种使用铝合金钣金辅助梁的尾翼前缘新构型。通过PAM-CRASH软件对三种前缘的抗鸟撞性能进行了数值计算,并根据计算结果在两种新构型中选择了抗鸟撞性能更好的作为优选构型。针对前缘原始构型和和优选构型开展鸟撞试验和试后计算分析。数值计算和试验结果都表明,该研究提出的带"波纹加强筋"的钣金辅助梁结构没有硬点,且材料延展性较好,可以通过结构发生大变形、紧固件大量失效吸收鸟撞过程中的能量,从而大幅提高尾翼前缘的抗鸟撞性能,而且该结构还具有明显的质量优势,可以应用于民机尾翼前缘抗鸟撞设计。Civil aircrafts have high requirements for the bird strike performance of a tail leading edge.The original auxiliary spar of a civil aircraft tail leading edge was an aluminum alloy machine part.Two novel configurations of the tail leading edge using aluminum alloy sheet metal auxiliary spars were proposed to optimize its bird strike resistance performance.The bird strike resistance of the three leading edges was calculated by the PAM-CRASH software,and the better one of the two new configurations was selected as the preferred configuration according to the analysis results.Bird strike tests were carried out for the original configuration and optimal configuration of the leading edge,and post-test simulations were carried out.The numerical calculation and test results show that the sheet metal auxiliary spar structure with corrugated stiffeners has no hard points,and the material has good ductility,which can absorb the energy during bird strike through large structure deformation and of many fasteners failure.The new structure greatly improves the bird strike resistance performance of the tail leading edge,and has obvious weight advantages,which can be applied to the civil aircraft tail leading edge design.

关 键 词：鸟撞 前缘 辅助梁 机加件 钣金件 波纹加强筋 

分 类 号：O347[理学—固体力学]