建立了缝合复合材料层板的面内拉伸强度模型,该模型考虑了缝合线对缝合层板拉伸强度的影响,将缝合线等效为椭圆形夹杂,应用含椭圆形夹杂的杂交应力单元建立了该模型的细节应力分析方法,通过引入特征长度的概念,采用点应力准则和最大应力判据实现了缝合层板的拉伸强度预报.试验数据和预报结果吻合较好,证明了该模型的有效性.同时系统讨论缝合参数对拉伸强度的影响规律,得到了一些重要结论.
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