破片侵彻飞机机翼壁板的应急修理有限元分析

Finite element analysis on emergency repair for wing panel of aircraft penetrated by fragments

针对飞机机翼壁板遭受导弹破片侵彻后的应急修理问题,以某飞机机翼受损壁板为例,采用全机有限元模型对其铆接修理进行强度计算.计算模型中补片的单元类型采用壳单元,铆钉用梁单元.结果表明,在铆钉钉距、排距和边距一定的情况下,铆钉排数与修理后的承载能力有对应关系.该对应关系为战场上合理制定应急修理方案提供理论参考.

With the emergency repair problem that wing panel of aircraft is penetrated by missile fragments, the damaged wing panel of an aircraft is taken as an example to calculate the strength after rivet joint repair according to the finite element model of the whole aircraft. The element type of patch is shell element and the element type of rivet is beam element. The results show the corresponding relationships exist between rivet rows and load-bearing capacity under the certain rivet spacing, row distance and edge distance. The corresponding relationships provide the theoretical reference to make a reasonable case for emergent repair on actual war field.