论文部分内容阅读
用能量法求解了绑结层合板和编织层合板等 3D复合材料中有纤维搭桥的椭圆形表面脱层的屈曲问题 .搭桥纤维被视为连续分布于脱层表面 ,可提供与脱层屈曲挠度成正比的恢复力的线性弹簧 .通过假定合理的屈曲模态 ,得到了满意的结果 .算例表明 ,纤维搭桥对提高临界屈曲载荷的作用十分明显 ,随着纤维搭桥弹性系数的增大 ,临界屈曲载荷迅速提高 ;椭圆长轴的长度增大时 ,临界屈曲载荷减小并逐渐收敛
The buckling problems of fiber-bridged oval surface delamination in 3D composites such as tie-laminate and braided laminate were solved by energy method. The bridging fibers were considered as continuous distribution on the delaminated surface, Which is proportional to the restoring force of the linear spring.Through the assumption of a reasonable buckling mode, satisfactory results are obtained.Examples show that the effect of fiber-bridging on the critical buckling load is obvious, with the elastic modulus of fiber-bridging increasing, the critical The buckling load increases rapidly. When the length of elliptical long axis increases, the critical buckling load decreases and converges gradually