为研究单丝复合体系在单向加载过程中的应力传递及损伤演化规律,基于剪滞模型建立了渐进损伤过程的三维数值分析模型.单丝复合体系的渐进损伤过程曲线和临界状态下的纤维段数、应变载荷及纤维轴向应力分布均与文献试验结果非常吻合,表明本文所提出的单丝复合体系渐进损伤模型能够有效模拟单丝断裂过程中的损伤起始、损伤演化和断裂临界状态.研究了模型中组分材料的模量和强度对损伤过程的影响.结果表明:保持组分材料强度不变,增加纤维的模量能够加快损伤过程,基体模量和界面模量的增加对单丝复合体系渐进损伤过程影响不大;在组分材料模量及界面强度不变的情况下,随着纤维强度的增加,单丝复合体系渐进损伤过程的起始应变载荷和临界应变载荷均增加,临界状态下的纤维断点数减少.
参考文献
| [1] | 杜善义;王 彪.复合材料细观力学[M].北京:科学出版社,1998:1-4. |
| [2] | 杨序纲.复合材料界面[M].北京:化学工业出版社,2010:1-2,56-60. |
| [3] | Cox H L.The elasticity and strength of paper and other fibrous materials[J].British Journal of Applied Physics,19523(3):72-79. |
| [4] | Nairn J A.A variational mechanics analysis of the stresses around breaks in embedded fibers[J].Mechanics of Materials,199213(2):131-154. |
| [5] | Kelly A;Tyson W R.Fibre-strengthened materials[J].Mechanics and Physics of Solids,196310:199. |
| [6] | Kelly A;Tyson W R.Tensile properties of fiber reinforced metals:copper/tungsten and copper/molybdenum[J].Journal of the Mechanics and Physics of Solids,196513(6):329-338. |
| [7] | Broutman L J .Measurement of the fiber-polymer matrix interfacial strength:interfaces in composites,ASTM STP452[R].Philadelphia,PA:ASTM,1969. |
| [8] | Mandell J F;Chen J H;McGarry F J.A microdebonding test forin situ assesment of fiber/matrix bond strength in composite materials[J].International Journal of Adhesion and Adhesives,19801(1):40-44. |
| [9] | Miler B;Muri P;Rebenfeld L.A microbond method fordetermination of the shear strength of a fiber/resin interface[J].Composites Science and Technology,198728(1):17-32. |
| [10] | Tomonaga Okabe;Nobuo Takeda.Estimation of strength distribution for a fiber embedded in a single-fiber composite: experiments and statistical simulation based on the elasto-plastic shear-lag approach[J].Composites science and technology,200112(12):1789-1800. |
| [11] | Nishikawa, A;Okabe, T;Takeda, N.Determination of interface properties from experiments on the fragmentation process in single-fiber composites[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,20081-2(1-2):549-557. |
| [12] | Ryvkin M;Aboudi J.The effect of a fiber loss in periodic composites[J].International Journal of Solids and Structures,200710(10):3497-3513. |
| [13] | 王晓宏;张博明;杜善义;孙新杨.基于弹塑性剪滞理论的单丝复合材料段裂过程的蒙特卡罗模拟[J].复合材料学报,2010(5):1-6. |
| [14] | Xiaohong Wang;Boming Zhang;Shanyi Du;Yufen Wu;Xinyang Sun.Numerical simulation of the fiber fragmentation process in single-fiber composites[J].Materials & design,20105(5):2464. |
| [15] | 王晓宏 .碳纤维/树脂单丝复合体系界面力学行为的研究[D].哈尔滨工业大学,2010. |
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%