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- 2015
复合材料三维损伤模型在大开口结构强度预测中的应用
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Abstract:
为了预测复合材料大开口结构的强度及损伤扩展情况, 开展了3种不同复合材料三维损伤退化模型(瞬间退化模型、渐进损伤退化模型和连续损伤退化模型)在复合材料大开口结构强度预测中的应用研究, 完成了含口框加强件的复合材料大开口结构面内纯剪切试验, 并采用3种损伤退化模型对试验件及相关文献算例进行了数值模拟。数值模拟结果与试验结果的对比表明:3种损伤退化模型均可以较为精确地预测复合材料大开口结构的极限强度; 与其他模型相比, 连续损伤退化模型的预测精度最高、通用性最好且网格依赖度最低。研究结果为复合材料大开口结构力学性能的研究提供了理论指导。 In order to predict the strength and damage revolution situation of large opening composite structures, the applied research of the three kinds of different composite material 3D damage degradation models (sudden degradation model, progressive damage model and continuum damage model) used in the prediction of the strength of large opening composite structures were conducted. In-plane pure shear test of large opening composite structure with frame reinforcer was carried out, and the three kinds of damage degradation models were used to numerically simulate the calculation examples of test specimen and relative reference. The comparison between numerical simulation results and experiment results shows that each of the three damage degradation models can predict the ultimate strength of large opening composite structures relatively accurately. Continuum damage model has the highest accuracy, best universality and lowest mesh dependency comparing to other models. The research results could provide theoretical guidance for the investigation of mechanical properties of large opening composite structures.
| [1] | Tserpesa K I, Labeas G, Papanikos P, et al. Strength prediction of bolted joints in graphite/epoxy composite laminates[J]. Composites Part B: Engineering, 2002, 33(7): 521-529. |
| [2] | Maimi P, Camanho P P, Davila C G. Prediction of size effects in notched laminates using continuum damage mechanics[J]. Composites Science and Technology, 2007, 67(13): 2715-2727. |
| [3] | Wang D Y, Wen W D, Cui H T. Three-dimensional progressive damage analysis of composite laminates containing a hole subjected to tensile loading[J]. Chinese Journal of Theoretical and Applied Mechanics, 2005, 37(6): 788-795 (in Chinese). 王丹勇, 温卫东, 崔海涛. 含孔复合材料层合板静拉伸三维逐渐损伤分析[J]. 力学学报, 2005, 37(6): 788-795. |
| [4] | Cui H P, Wen W D, Cui H T. Three-dimensional progressive damage of laminated composites with a hole under compressive loading[J]. Chinese Journal of Mechanical Engineering, 2006, 42(8): 89-94 (in Chinese). 崔海坡, 温卫东, 崔海涛. 含孔复合材料层合板在压缩载荷下的三维逐渐损伤[J]. 机械工程, 2006, 42(8): 89-94. |
| [5] | Lu G F, Liu Y, Zhang C L. Three-dimensional finite element failure analysis of natched composite laminates[J]. Chinese Quarterly of Machanics, 2008, 29(2): 259-265 (in Chinese). 鲁国富, 刘勇, 张呈林. 含缺口复合材料层合板的三维有限元失效分析[J]. 力学季刊, 2008, 29(2): 259-265. |
| [6] | Hashin Z. Failure criteria for unidirectional fiber composites[J]. Journal of Applied Mechanics, 1980, 47(3): 29-34. |
| [7] | Leone F. Full-scale testing and progressive damage modeling of sandwich composite aircraft fuselage structure[D]. Philadelphia: Drexel University, 2010. |
| [8] | Bazant Z, Oh B. Crack band theory for fracture of concrete[J]. Materials Structure, 1983, 16(3): 155-177. |
| [9] | Camanho P, Matthews F. A progressive damage model for mechanically fastened joints in composite laminates[J]. Composite Materials, 1999, 33(24): 2248-2280. |
| [10] | Maimi P, Camanho P, Mayugo J. A continuum damage model for composite laminates: Part II-Computational implementation and validation[J]. Mechanics of Materials, 2007, 39(10): 909-919. |
| [11] | Qing H, Mishnaevsky L. 3D constitutive model of anisotropic damage for unidirectional ply based on physical failure mechanisms[J]. Computational Materials Science, 2010, 50(2): 479-486. |
| [12] | Turon A, Da'vila C, Camanho P. An engineering solution for mesh size effects in the simulation of delamination using cohesive zone models[J]. Engineering Fracture Mechanics, 2007, 74(10): 1665-1682. |
| [13] | Gao W C, Li X L, Liu W, et al. Experimental study on composite laminate with a large elliptical cutout under shear load[J]. Acta Materiae Compositae Sinica, 2012, 29(6): 243-248 (in Chinese). 高维成, 李小乐, 刘伟, 等. 剪切载荷下含椭圆形大开口层合板的试验研究[J]. 复合材料学报, 2012, 29(6): 243-248. |
