为预测含孔隙复合材料单向层合板的有效弹性常数,基于孔隙周边纤维分布和形态与三维Rankine椭圆体绕流流场的相似性,提出了一种基于三维Rankine椭圆体绕流流场比拟的含孔隙复合材料弹性常数计算模型与方法.建立了含孔隙复合材料的有限元单胞计算模型,用流场的速度变化比拟单胞内纤维体积分数的变化,用流线形状比拟孔隙周边纤维的形态.通过对单胞施加周期性边界条件,结合孔隙形态的概率分布模型和刚度平均法,计算了含孔隙复合材料单向层合板的弹性常数.计算结果与实验数据有较好的一致性,数值计算可以有效反映孔隙对复合材料单向层合板弹性常数的影响.
参考文献
| [1] | 张立功,张佐光.先进复合材料中主要缺陷分析[J].玻璃钢/复合材料,2001(2):42-45.Zhang Ligong,Zhang Zuoguang.Analysis of defects in advanced composites[J].Fiber Reinforced Plastics/Composite,2001(2):42-45. |
| [2] | Huang H,Talreja R.Effects of void geometry on elastic properties of unidirectional fiber reinforced composites[J].Composites Science and Technology,2005,65 (13):1964-1981. |
| [3] | Olivier P,Cottu J P,Ferret B.Effects of cure cycle pressure and voids on some mechanical properties of carbon/epoxy laminates[J].Composites,1995,26(7):509-515. |
| [4] | Chambers A R,Earl J S,Squires C A,et al.The effect of voids on the flexural fatigue performance of unidirectional carbon fibre composites developed for wind turbine applications[J].International Journal of Fatigue,2006,28(10):1389-1398. |
| [5] | Liu L,Zhang B,Wang D,et al.Effects of cure cycles on void content and mechanical properties of composite laminates[J].Composite Structures,2006,73(3):303-309. |
| [6] | John E.Damage detection in composite materials[M].Philadelphia:ASTM International,1992:152-162. |
| [7] | Costa M L,de Almeida S F M,Rezende M C.The influence of porosity on the interlaminar shear strength of carbon/epoxy and carbon/bismaleimide fabric laminates[J].Composites Science and Technology,2001,61(14):2101-2108. |
| [8] | Ghiorse S R.Effect of void content on the mechanical properties of carbon/epoxy laminates[J].SAMPE quarterly,1993,24(2):54-59. |
| [9] | Madsen B,Lilholt H.Physical and mechanical properties of unidirectional plant fibre composites-An evaluation of the influence of porosity[J].Composites Science and Technology,2003,63(9):1265-1272. |
| [10] | Eshelby J D.The determination of the elastic field of an ellipsoidal inclusion,and related problems[J].Proceedings of the Royal Society of London,Series A-Mathematical and Physical Sciences,1957,241(1226):376-396. |
| [11] | Eshelby J D.The elastic field outside an ellipsoidal inclusion[J].Proceedings of the Royal Society of London,Series A-Mathematical and Physical Sciences,1959,252(1271):561-569. |
| [12] | Evans S L.Effects of porosity on the fatigue performance of polymethyl methacrylate bone cement:An analytical investigation[J].Journal of Engineering in Medicine,2006,220(1):1-10. |
| [13] | 汪海滨,张卫红,杨军刚,等.考虑孔隙和微裂纹缺陷的C/C-SiC编织复合材料等效模量计算[J].复合材料学报,2008,25(3):182-189.Wang Haibin,Zhang Weihong,Yang Jungang,et al.Numerical computing of effective modulus of woven C/C-SiC composites including porosities and micro-cracks[J].Acta Materiae Compositae Sinica,2008,25(3):182-189. |
| [14] | 刘兵山,燕瑛.缝合复合材料弹性性能分析的新方法--流场模型Ⅰ:缝合单层板弹性常数计算[J].复合材料学报,2006,23(4):129-135.Liu Bingshan,Yan Ying.New method on the elastic properties of stitched composites-Flow field model Ⅰ:Elastic constants calculation of the stitched laminar[J].Acta Materiae Compositae Sinica,2006,23(4):129-135. |
| [15] | 刘兵山,燕瑛.缝合复合材料弹性性能分析的新方法--流场模型Ⅱ:缝合层合板弹性常数计算与实验[J].复合材料学报,2006,23(4),136-142.Liu Bingshan,Yan Ying.New method on the elastic properties of stitched composites-Flow field model Ⅱ:Elastic constants calculation of the stitched laminar[J].Acta Materiae Compositae Sinica,2006,23(4):136-142. |
| [16] | Graebel W P.Advanced fluid mechanics[M].USA:Academic,Pr,2007:67. |
| [17] | Chamis C C.Simplified composite micromechanics equations for strength,fracture toughness,impact resistance and environmental effects,TM-83696[R].Virginia:National Technical Information Service,1984. |
| [18] | 华志恒,周晓军,刘继忠.碳纤维复合材料(CFRP)孔隙的形态特征[J].复合材料学报,2005,22(6):104-107.Hua Zhiheng,Zhou Xiaojun,Liu Jizhong.Morphology of pores in carbon fiber feinforced plastics[J],Acta Materiae Compositae Sinica,2005,22(6):104-107. |
| [19] | AMSC.The composite materials handbook[M].USA:Document Automation and Production Service,2002:163. |
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%