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采用有限元法,对平板叶片在不同鸟撞击角度下的非线性瞬态响应进行了数值分析研究.结果表明,平板叶片在不同撞击角度下的弯曲变形、到达最大变形的时间及残余变形随着撞击角度的增加而增大;平板叶片的扭转变形随着撞击角度的增加先增大后减少,撞击角度在小于30°及90°附近对平板叶片的扭转变形影响很小.
The finite element method is used to study the nonlinear transient response of the slab under different bird impact angles. The results show that the bending deformation of the slab at different angles of impact and the maximum deformation time and residual deformation The impact deformation of flat blade first increases and then decreases with the increase of impact angle. Impact angle less than 30 ° and 90 ° have little effect on the torsional deformation of flat blade.