| 引用本文: | 刘建光,王忠金.粘着应力拉伸过程数值模拟及粘着应力模型[J].材料科学与工艺,2010,18(3):348-351.DOI:10.11951/j.issn.1005-0299.20100312. |
| LIU Jian-guang,WANG Zhong-jin.Numerical simulation of viscous adhesive stress tension test and viscous adhesive stress model[J].Materials Science and Technology,2010,18(3):348-351.DOI:10.11951/j.issn.1005-0299.20100312. |
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| 摘要: |
| 为了精确计算粘性介质压力成形过程中粘性介质/板材界面粘性附着作用,分析了压力、剪切速率、温度等因素对粘着应力的影响,提出了粘着应力计算模型.将提出的粘着应力模型引入有限元分析软件中,对粘着应力拉伸过程进行了数值模拟,并将计算结果与试验结果进行对比,验证提出模型的可靠性.结果表明:采用建立的模型预测的试样伸长量及应变分布与实验测量结果具有较好的一致性.说明建立的粘着应力模型可以准确反映板材/粘性介质界面粘着应力大小,为精确模拟粘性介质压力成形过程提供了模型. |
| 关键词: 粘性介质成形 粘着应力 模型 拉伸试验 数值模拟 |
| DOI：10.11951/j.issn.1005-0299.20100312 |
| 分类号:TG306 |
| 基金项目:国家自然科学基金资助项目(50805034;50275035) |
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| Numerical simulation of viscous adhesive stress tension test and viscous adhesive stress model |
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LIU Jian-guang, WANG Zhong-jin
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School of Materials Science & Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| A new model is proposed to accurately calculate the viscous adhesive stress at the interface of viscous medium and sheet metal in viscous pressure forming(VPF) through analyzing the influences of pressure,shear strain rate and temperature of viscous medium on the viscous adhesive stress.By introducing the developed viscous adhesive stress model into finite element analysis program,the viscous adhesive stress tensile test is simulated.The numerical simulation results are compared with experimental ones,and then the developed model is verified.Research results show that the elongation and strain distribution of tensile test sample predicted by numerical simulation have a good agreement with those by experimental measurement.Thus it can be concluded that the developed viscous adhesive stress model can accurately reflect the characteristic of viscous adhesive stress and provide a model for the accurate numerical simulation of VPF. |
| Key words: viscous pressure forming(VPF) viscous adhesive stress model tension test numerical simulation |
