| 三维编织复合材料几何建模及数值分析 |
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| 引用本文： | 魏高峰,孙晓强,刘国永,孙志平.三维编织复合材料几何建模及数值分析[J].固体力学学报,2011(Z1). |
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| 作者姓名： | 魏高峰 孙晓强 刘国永 孙志平 |
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| 作者单位： | 山东轻工业学院机械工程学院; |
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| 基金项目： | 山东省优秀中青年科学家奖励基金(2007BS04045、2007BS04004); 山东省自然科学基金(Y2008A11)资助 |
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| 摘 要： | 论文根据三维编织复合材料的结构特点,把整体结构分为内部单胞、表面单胞和角单胞三种类型的子单胞,考虑空间纤维束的相互扭结和挤压所造成的纤维束的弯曲和截面变形,针对每种类型的子单胞,建立了相应的几何分析模型.引入周期性位移边界条件,建立了材料的弹性性能预报模型,得到了三维编织复合材料的工程弹性常数.通过数值比较可以看出,论文所给出的数值计算结果与实验结果吻合较好,从而验证了本文模型的有效性.
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| 关 键 词： | 三维编织复合材料 单胞 弹性性能 工程弹性常数 |
GEOMETRIC MODEL FOR THREE-DIMENSIONAL BRAIDED COMPOSITES AND ITS NUMERICAL ANALYSIS |
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| Gaofeng Wei Xiaoqiang Sun Guoyong Liu Zhiping Sun.GEOMETRIC MODEL FOR THREE-DIMENSIONAL BRAIDED COMPOSITES AND ITS NUMERICAL ANALYSIS[J].Acta Mechnica Solida Sinica,2011(Z1). |
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| Authors: | Gaofeng Wei Xiaoqiang Sun Guoyong Liu Zhiping Sun |
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| Institution: | Gaofeng Wei Xiaoqiang Sun Guoyong Liu Zhiping Sun(Institute of Mechanical Engineering,Shandong Institute of Light Industry,Jinan,250353) |
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| Abstract: | Based on the geometrical characteristic of the yarns,geometric model for three-dimensional braided composites,which separates the unit cell into the interior unit cell,the surface unit cell and the corner unit cell,is proposed.The variation of bending characteristics and cross-sectional deformation for the yarns in a three-cell is considered.The model to predict the elastic properties is presented by coupling with the periodical displacement boundary conditions,and the elasticity constants of the material a... |
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| Keywords: | three-dimensional braided composites unit cell elastic property elasticity constant |
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