从基于小参数渐近展开和摄动方法的均匀化理论出发,给出了求解细观应力的数学表达式.通过有限元方法对三维编织复合材料的细观应力场进行数值模拟,并结合适当的强度准则对拉伸极限强度下单元的失效情况进行判断,得出材料强度的一种细观失效判据.通过该方法得到的应力计算结果与实验结论基本相符.
参考文献
| [1] | 冯淼林,吴长春,孙慧玉.三维均匀化方法预测编制复合材料等效弹性模量[J].材料科学与工程,2001,19(3):34-37.Feng Miaolin, Wu Changchun, Sun Huiyu. Three-dimensional homogenization method in constitutive simulation of braided composite materials[J]. Materials Science & Engineering, 2001, 19(3): 34-37. |
| [2] | 刘书田,程耿东.复合材料应力分析的均匀化方法[J].力学学报,1997,29(3):306-313.Liu Shutian, Cheng Gengdong. Homogenization method of stress analysis of composite structures [J]. Acta Mechanica Sinica, 1997, 29(3): 306-313. |
| [3] | 卢子兴,冯志海,寇长河,等.编织复合材料拉伸力学性能的研究[J].复合材料学报,1999,16(3):130-134.Lu Zixing, Feng Zhihai, Kou Changhe, et al. Studies on tensile properties of braided structural composite materials [J].Acta Materiae Compositae Sinica , 1999, 16(3) : 130-134. |
| [4] | 卢子兴,刘振国,麦汉超,等.三维编织复合材料强度的数值预报[J].北京航空航天大学学报,2002,28(5):563-565.Lu Zixing, Liu Zhenguo, Mai Hanchao, et al. Numerical prediction of strength for 3D braided composites [J]. Journal of Beijing University of Aeronautics and Astronautics,2002, 28(5): 563-565. |
| [5] | 刘振国,陆萌,麦汉超,等.三维四向编织复合材料弹性模量数值预报[J].北京航空航天大学学报,2000,26(2):182-185.Liu Zhenguo, Lu Meng, Mai Hanchao, et al. Numerical prediction of moduli of 3-D and 4-step braided composites [J].Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(2): 182-185. |
| [6] | Chen L, Tao X M, Choy C L. On the microstructure of three-dimensional braided preforms [J]. composites Science and Technology, 1999, 59: 391-404. |
| [7] | 黄小平.四向矩形编织复合材料几何细观结构和力学性能研究[D].南京:南京航空航天大学,2001.Huang Xiaoping. A study on geometric microstructure and mechanical performances of 4-directional rectangular braided composites [D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2001. |
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%