航空学报 > 1992, Vol. 13 Issue (11): 685-688

复合材料层板一维穿透脱层的能量释放率

邹振民, 樊蔚勋   

  1. 南京航空学院104教研室 南京 210016
  • 收稿日期:1991-09-03 修回日期:1992-04-21 出版日期:1992-11-25 发布日期:1992-11-25

THE ENERGY RELEASE RATE OF ONE-DIMENSIONAL THROUGH-WIDTH DELAMINATION IN LAMINATES

Zou Zhen-min, Fan Wei-xun   

  1. Faculty 104 of Nanjing Aeronautical Institute, Nanjing, 210016
  • Received:1991-09-03 Revised:1992-04-21 Online:1992-11-25 Published:1992-11-25

摘要:

建立了含穿透脱层的正交各向异性层合板在承受面内轴向压缩载荷作用时的一维分析模型。在一阶剪切层板理论的基础上,利用一维可动边界变分问题,结合断裂力学知识导出了脱层扩展的能量释放率G及其分量G、G的表达式,且验证了该方法的正确性。通过计算,讨论了外载和脱层长度对能量释放率的影响。

关键词: 复合材料, 层合板, 脱层, 屈曲

Abstract:

In this paper, a one-dimensional analytical model is developed for the ortho-tropic laminates with through-width delamination subjected to compressive loads. On the basis of the first order shear deformable plate theory analysis, the energy release rate G and its individual components G、G for the deiamination growth are obtained using a combination of the variational problem with the moving boundary and fracture mechanics. This method is more convenient than the finite element method and is verified by numerical calculation. The effects of the applied load and delamination length on energy release rate G and G are also discussed in the parametric study.

Key words: composite materials, laminates, delamination, buckling