圆管状三维编织复合材料多尺度耦合分析

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In the establishment of tubular 3D braided composites based on multi scale model, the multi-scale coupling numerical analysis. Based on the micro, tiny and single cell analysis, stepwise by fiber bundles of the average of the elastic constants and the average of the elastic constants of composites. Then by the opposite direction to establish among the stress transfer, selecting a representative macroscopic tube structure toad and stress analysis, estimate the structure key parts in micro, tiny stress state, as the braided composite material strength and damage analysis reference.在建立圆管状三维编织复合材料多尺度模型基础上,对其多尺度耦合进行数值分析。通过对微、细观单胞的分析,逐级得到纤维束的平均弹性常数和编织复合材料的平均弹性常数。然后由相反方向建立应力之间的传递,选取一种有代表性的宏观圆管结构进行载荷和应力分析,估计出结构中关键部位微、细观的应力状态,为编织复合材料的强度和损伤分析提供参考。