摘要
机翼梁加筋腹板主要承受剪力,屈曲是其重要的失效模式,临界屈曲载荷是其结构强度的重要表征。在飞机结构设计中合理增加筋条来减小腹板的尺寸,既可以提高腹板的临界屈曲载荷,也可以适当减轻结构重量。文章通过数值计算(有限元非线性分析)结果来说明合理设置加强筋止裂筋对提高梁腹板临界屈曲载荷的贡献。
Reinforced main spar web withstand shear buckling failure modes is important, the critical buckling load is important to characterize its structural strength. Ribs reasonable increase in aircraft structure design to reduce the size of the web, the web can enhance the critical buckling load can also be appropriate to reduce the structural weight. In this paper, the calculation （non-linear finite element analysis） to justify the results of numerical set stop ribs cracked rib to improve the critical buckling load beam web contribution.
出处
《大众科技》
2016年第4期57-58,共2页
Popular Science & Technology
关键词
梁腹板
屈曲
筋条
数值计算
临界屈曲载荷
Beam web
buckling
ribs
numerical calculation
critical buckling load
