| 胶层吸湿对单搭接接头影响的数值模拟 |
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| 引用本文： | 李智,游敏,郑小玲,赵美蓉,晏嘉陵.胶层吸湿对单搭接接头影响的数值模拟[J].计算力学学报,2008,25(Z1). |
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| 作者姓名： | 李智 游敏 郑小玲 赵美蓉 晏嘉陵 |
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| 作者单位： | 三峡大学机械与材料学院; |
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| 基金项目： | 湖北省教育厅科研项目
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| 摘 要： | 在建立胶桔剂吸涅本构模型的基础上,用弹塑性有限元法研究了聚丙烯酸酯胶层吸涅程度对单搭接接头上胶层中应力分布的影响.结果表明:随着胶层吸湿程度增加,单搭接接头上胶瘤处的峰值应力显著降低.对水分从搭接区两侧渗入胶层的总宽度变化时胶层中的应力分布作了研究,发现随渗入总宽度的增加,胶层中的等效应力Seqv峰值下降.因水分渗入后引起胶层溶胀,在胶瘤过渡到中间胶层的拐角处会产生严重变形,可能导致该处发生脱粘.
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| 关 键 词： | 聚丙烯酸酯 铝合金 湿度 渗入深度 本构模型 |
The numerical analysis of the moisture absorption on the adhesively bonded aluminium single lap joints |
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| LI Zhi,YOU Min,ZHENG Xiao-ling,ZHAO Mei-rong,YAN Jia-ling.The numerical analysis of the moisture absorption on the adhesively bonded aluminium single lap joints[J].Chinese Journal of Computational Mechanics,2008,25(Z1). |
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| Authors: | LI Zhi YOU Min ZHENG Xiao-ling ZHAO Mei-rong YAN Jia-ling |
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| Institution: | College of Mechanical and Material Engineering;China Three Gorges University;Yichang 443002;China |
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| Abstract: | The numerical analysis was carried out to study the influence of the water absorption on the stress distribution in the polyacrylate adhesive layer of the single lap joint using the elasto-plastic finite element analysis(FEA) based on absorption constitutive model of the adhesive established by the authors.The results from the numerical simulation show that the peak stress at the corner of the fillet decreased evidently as the moisture absorption level increased.The stress distribution was also studied and ... |
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| Keywords: | polyacrylate aluminium alloy humidity absorption depth constitutive model |
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