采用细观力学方法以及虚拟裂纹闭合法(VCCT)对含有Z-pin增强复合材料双悬臂梁(DCB)结构Ⅰ型断裂韧性进行了研究.利用有限元法建立了结构模型,采用实体单元模拟复合材料层压板结构和非线性弹簧元模拟Z-pin.通过计算应变能释放率对含有不同体积分数Z-pin的复合材料层压板Ⅰ型断裂韧性与不含Z-pin的复合材料层压板Ⅰ型断裂韧性进行了对比分析.研究表明,含有Z-pin增强复合材料双悬臂梁(DCB)结构Ⅰ型断裂韧性在裂纹扩展过程中受到Z-pin桥联作用的影响而显著增强,且其增强效果与Z-pin的体积分数、处在桥联区的Z-pin数目均相关,这表明Z-pin增强方法能够有效提高复合材料层压板的分层扩展阻力.
参考文献
| [1] | Freitas G,Magee C,Dardzinski P,Fusco T.Fiber insertion process for improved damage tolerance in aircraft laminates[J].Journal of Advanced Materials,1994,25:36-43. |
| [2] | Partridge I K,Carrie D D R.Delamination resistant laminates by Z-fiber pinning Ⅰ:Manufacture and fracture performance[J].Composites Part A,2005,36(1):55-64. |
| [3] | Mouritz A P.Review of Z-pinned composite laminates[J].Composites Part A,2007,38(12):2382-2389. |
| [4] | Byrd Larry W,Birman Victor.The estimate of the effect of Z-pins on the strain release rate,fracture and fatigue in a composite co-cured Z-pinned double cantilever beam[J].Composite Structures,2005,68(1):53-63. |
| [5] | Allegri G,Zhang X.On the delamination and debond suppression in structural joints by Z-fibre pinning[J].Composites Part A,2007,38(4):1107-1115. |
| [6] | 杜龙,矫桂琼,黄涛,等.X状Z-pin增强泡沫夹层结构的剪切性能[J].复合材料学报,2007,24(6):140-146.Du Long,Jiao Guiqiong,Huang Tao,et al.Shear properties of X-Z-pin reinforced foam core sandwich[J].Acta Materiae Compositae Sinica,2007,24(6):140-146. |
| [7] | Chang P,Mouritz A P,Cox B N.Properties and failure mechanisms of Z-pinned laminates in monotonic and cyclic tension[J].Composites Part A,2006,37(10):1501-1513. |
| [8] | Mouritz A P.Compression properties of Z-pinned composite laminates[J].Composites Science and Technology,2007,67(15/16):3110-3120. |
| [9] | Cartie Denis D R,Troulis Manos,Partridge Ivana K.Delamination of Z-pinned carbon fibre reinforced laminates[J].Composites Science and Technology,2006,65(6):855-861. |
| [10] | Dai Shaocong,Yan Wenyi,Liu Hongyuan,Mai Yiu-Wing.Experimental study on Z-pin bridging law by pullout test[J].Composites Science and Technology,2004,64(16):2451-2457. |
| [11] | 孙先念,刘书田.Z-pins几何分布对其增强复合材料双悬臂梁Ⅰ型层间韧性的影响[J].复合材料学报,2007,24(3):160-166.Sun Xiannian,Liu Shutian.Effect of Z-pins distribution on mode Ⅰ delamination toughness of Z-pinned laminated double cantilever beam specimens[J].Acta Materiae Compositae Sinica,2007,24(3):160-166. |
| [12] | Yan Wenyi,Liu Hongyuan,Mai Yiu-Wing.Numerical study on the mode Ⅰ delamination toughness of Z-pinned laminates[J].Composites Science and Technology,2003,63(10):1481-1493. |
| [13] | 中国航空研究院.应力强度因子手册[M].北京:科学出版社,1993:22-23.Chinese Aviation Academy.Stress intensity factor manual[M].Beijing:Science Press,1993:22-23. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%