对复合材料斜削结构进行了压缩试验和相应的有限元模拟分析,编制了损伤子程序模拟结构内部的损伤.通过对试验数据和数值模拟结果的对比,发现数值模拟结果和试验数据吻合较好.试验和模拟结果显示,由于削层的存在,使得结构更复杂,尤其在过渡段内,各截面的性能互不相同.通过损伤模拟,预测了三种损伤形式的萌生位置和扩展方向,发现结构同时发生基体开裂损伤和纤维-基体剪切损伤,然后再发生纤维屈曲损伤.基体开裂损伤和纤维-基体剪切损伤的发生对结构的承载能力有严重影响,是灾难性的.而随后发生的纤维屈曲损伤加剧了这种影响,此时结构完全失去承载能力.
参考文献
| [1] | MUKHERJEE A;VARUGHESE B .Development of a specialized finite element for the analysis of composite structures with ply drop-off[J].Computers & Structures,1999,46:1-16. |
| [2] | He K.;Hoa S.V. .The study of tapered laminated composite structures: a review[J].Composites science and technology,2000(14):2643-2657. |
| [3] | Byji Varughese;Abhijit Mukherjee .A ply drop-off element for analysis of tapered laminated composites[J].Computers & Structures,1997,39:123-144. |
| [4] | B.R. Vidyashankar;A.V. Krishna Murty .Analysis of laminates with ply drops[J].Composites science and technology,2001(5):749-758. |
| [5] | CUI Weicheng;WISNOM Michael R;JONES Mike .New model to predict static strength of tapered laminates[J].Composites,1995,26:141-146. |
| [6] | K. He;R. Ganesan;S.V. Hoa .Modified shear-lag model for analysis of a composite laminate with drop-off plies[J].Composites science and technology,2003(10):1453-1462. |
| [7] | ABAQUS user's manual,version 6.1[M].HKS,Inc,2000 |
| [8] | CHANG F K;LESSARD L B .Damage tolerance of laminated composites containing an open hole and subjected to compressive loading:Part 1-analysis[J].Journal of Composite Materials,1991,25:2-43. |
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%