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复合材料层合板开口翻边补强试验和数值研究

, PP. 190-196

Keywords: 复合材料层合板,有限元,力学行为,损伤

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Abstract:

对复合材料开口补强层合板进行压缩试验研究。对复合材料开口非补强和开口补强层合板建立有限元模型,采用三维8节点厚壳单元(S8R),分别利用非线性分析和线性分析方法对复合材料的应力-应变响应进行模拟。通过试验数据与数值结果对比发现,几何非线性分析方法较线弹性分析方法能更好地符合试验结果。通过编制材料子程序(UMAT)来预测材料的损伤萌生和扩展,预测的应力-应变响应、损伤扩展、失效强度基本与试验结果一致。

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