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材料工程  2014 

间隙率对三轴向机织复合材料弹性性能的影响

DOI: 10.3969/j.issn.1001-4381.2014.03.003, PP. 14-20

Keywords: 三轴向机织复合材料,间隙率,弹性性能,拉伸刚度,压缩刚度,剪切刚度,比刚度

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Abstract:

采用有限元分析方法研究了间隙率对三轴向机织复合材料弹性性能的影响。首先,根据三轴向机织复合材料几何构型和基本参数,建立了三轴向机织复合材料的面密度和单胞特征边长与间隙率之间的关系;然后,建立了三轴向机织复合材料的有限元模型,利用该模型预测了拉伸、压缩和剪切刚度并与文献的实验结果进行了对比,证明了模型的有效性;最后,分析了间隙率对弹性性能的影响。研究发现,拉伸、压缩和剪切刚度随间隙率的增加而显著下降,而比刚度和泊松比随间隙率的增加变化较小。

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