不同铺层角度GLARE层板复合材料的抗鸟撞性能

摘要

Two finite element models for simple planes and tailplane front structures of GLARE laminate composite with three kinds of ply angles were built by the nonlinear dynamics software PAM-CRASH,and then bird impact finite element simulation was carried out on the simple planes and structures by the software.The bird impact resistance of GLARE laminate composite with different ply angles was studied,and experiment verification was carried out.The results show that,for the laminate composite with same thickness,the plane and the structure with cross-ply structure ±45°had the best absorption energy effect and bird-impact resistance,and followed by the planes and the structures with 0°/90°and 0°/45°/-45°/90°.The destruction pattern,destruction area and strain-time curve of a point near the impact location got from experiment were consistent with those got from simulation, indictating that the finite element model is correct.%采用大型非线性动力学软件PAM-CRASH,分别建立了三种铺层角度GLARE层板复合材料简单平板和飞机尾翼典型前缘结构的有限元模型,对三种平板和结构进行抗鸟撞有限元模拟,研究了不同铺层角度GLARE层板复合材料的抗鸟撞性能,并进行了试验验证。结果表明：对于厚度相同的GLARE层板复合材料,铺层角度为±45°正交铺层方式的平板和结构的吸能量效果最佳,抗鸟撞性能最优；铺层角度为0°/90°正交铺层方式的次之,0°/45°/－45°/90°铺层方式的最差；试验得到的三种铺层结构的破坏形态、面积以及撞击点附近某点的应变时程曲线与模拟结果一致,说明建立的有限元模型正确。