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孔口缝合补强对含孔层板应变集中影响的实验研究

, PP. 169-174

Keywords: 含孔复合材料层板,缝合补强,应变集中系数,缝合参数设计

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Abstract:

对复合材料开口缝合补强结构进行了实验研究。测试了不同缝合参数(针距、行距、边距、单重和双重缝合)补强的含孔复合材料层板的拉伸强度,研究了孔边应力集中、应变集中对强度、刚度等力学性能参数的影响,分析讨论了孔边及邻近区域应变集中及应变分布的规律,得到不同缝合参数、孔边不同位置以及不同载荷条件下的应变集中系数。结合实验结果和分析讨论,给出了含孔复合材料层板缝合补强的缝合设计参数。

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