发展了一种细观力学有限元分析方法--拟真实的参数化双随机分布模型,该模型综合考虑了纤维增强树脂基复合材料的真实微结构特点和纤维单丝综合力学性能测试结果的离散性特征,模拟了复合材料中纤维排列和强度分布的随机性.借助移动窗口法研究了该参数化双随机分布模型的可靠性,确定了其代表性体积单元的尺寸.基于能量法原理推导了单向复合材料的弹性模量预测公式,结合能量法和渐进失效分析方法,利用该细观力学有限元方法分别预测了单向纤维增强树脂基复合材料T300/5228的弹性模量和强度性能.数值模拟结果和大部分试验结果吻合良好,表明发展的细观力学有限元方法能够较好地预测复合材料的力学性能.
参考文献
| [1] | Aghdam M M,Dezhsetan A.Micromeehanics based analysis of randomly distributed fiber reinforced composites using simplified unit cell model[J].Composite Structure,2005,71:327-332. |
| [2] | Sun Changiie,Payman S,et al.Finite element analysis of elastic property bounds of a composite with randomly distributed particles[J].Composites Part A,2007,38:80-86. |
| [3] | Vaughan T J,McCarthy C T.A combined experimentalnumerical approach for generating statistically equivalent fiber distributions for high strength laminated composite materials[J].Composites.Science and Technology,2010,70:291-297. |
| [4] | 燕瑛,丁逸强.二维和三维纺织结构复合材料弹性性能的研究[J].航空学报,1996,17(增):98-102.Yan Ying,Ding Yiqiang.Elastic behaviour of 2D and 3D textile structural composites[J].Acts Aeronautics et Astronautica Sinica,1996,17(S):98-102. |
| [5] | 雷友锋,魏德明,高德平.细观力学有限元法预测复合材料宏观有效弹性模量[J].燃气涡轮试验与研究,2003,16(3):11-15.Lei Youfeng,Wei Deming,Gao Deping.Predicting macroscopic effective elastic moduli of composites by micromechanics FEM[J].Gas Turbine Experiment and Research,2003,16(3):11-15. |
| [6] | 燕瑛,韩凤宇,杨东升,等.缝合复合材料弹性性能的三维有限元细观分析与试验验证[J].航空学报,2004,25(3):267-269.Yan Ying,Han Fengyu,Yang Dongshen,et al.Finite element mieromechanical analysis and experimental confirmation of the elastic properties of stitched composite materials[J].Acta Aeronautica et Astronautica Sinica,2004,25(3):267-269. |
| [7] | 周储伟.高体积含量颗粒增强复合材料的一个细观力学模型I:弹性分析与等效模量[J].复合材料学报,2005,22(4):125-130.Zhou Chuwei.Micromechanical model for composites reinforced by large volume fraction of particles I:Elastic analysis and effective modulus[J].Acta Materiae Compositae Sinica,2005,22(4):125-130. |
| [8] | 李金超,张一帆,孙菲,等.三维五向编织复合材料的力学性能分析I;细观结构模型[J].复合材料学报,2009,26(1):150-155.Li Jinchao,Zhang Yifan,Sun Fei,et al.Mechanics analysis of three-dimensional five-directional braided composites I:Microstruetural model[J].Acta Materiae Compositae Sinica,2009,26(1):150-155. |
| [9] | 谭祥军,杨庆生.纤维束分布对复合材料有效性能的影响[J].复合材料学报,2009,26(3):188-194.Tan Xiangjun,Yang Qingsheng.Influence of microstructure on effective properties of fiber bundle reinforced composites[J].Acta Materiae Compositae Sinica,2009,26(3):188-194. |
| [10] | 章继峰,王振清,周健生,等.于Python-Abaqus复合材料代表性体积元的数值模型[J].宇航材料工艺,2009(3):25-29.Zhang Jifeng,Wang Zhenqing,Zhou Jiansheng,et al.Numerical modeling of composite representative volume element(RVE)based on Python-Abaqus[J].Aerospace Materials & Technology,2009(3):25-29. |
| [11] | 曾庆敦.复合材料的细观破坏机制与强度[M].北京:科学出版社,2002. |
| [12] | 李海斌,祝世杰,石增强,等.移动窗口技术在复合材料弹性性能场表征中的应用[J].纤维复合材料,2009(2):3-8.Li Haibin,Zhu Shijie,Shi Zengqiang,et al.Application of moving-window in characterization of composite materials elasticity property field[J].Fiber Composites,2009(2):3-8. |
| [13] | 蒋咏秋,陆逢升,顾志建.复合材料力学[M].西安:西安交通大学出版社,1990. |
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