| 平面应变过程中摩擦对金属流变规律的影响 |
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| 引用本文： | 潘红波,唐荻,胡水平,王潇潇.平面应变过程中摩擦对金属流变规律的影响[J].北京科技大学学报,2008,30(11). |
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| 作者姓名： | 潘红波 唐荻 胡水平 王潇潇 |
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| 作者单位： | 北京科技大学高效轧制国家工程研究中心,北京,100083 |
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| 基金项目： | 教育部211工程重点项目
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| 摘 要： | 研究了平面应变压缩过程中摩擦对金属流变规律以及力能参数的影响. 通过有限元软件MSC/Superform,采用二维以及三维热力耦合有限元理论对不同摩擦条件下的力能参数、宽展情况以及变形金属的流动情况进行了分析;在自主研制的大试样平面应变热模拟试验机上,利用室温下工业纯铝探讨了上下接触面摩擦不一致时金属流动的规律. 结果显示:随着摩擦的增大,变形负载将增大,宽展减小;当上下接触面间摩擦条件不同时,变形后的试样将出现"U"字型,而且随着上下接触面之间摩擦差值的增大,其变形不均将更加严重.
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| 关 键 词： | 平面应变压缩 大试样平面应变 摩擦 宽展 不均匀变形 |
Effect of friction on metallic rheology during plane strain compression |
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| PAN Hongbo,TANG Di,HU Shuiping,WANG Xiaoxiao.Effect of friction on metallic rheology during plane strain compression[J].Journal of University of Science and Technology Beijing,2008,30(11). |
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| Authors: | PAN Hongbo TANG Di HU Shuiping WANG Xiaoxiao |
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| Institution: | PAN Hongbo,TANG Di,HU Shuiping,WANG Xiaoxiao National Engineering Research Center for Advanced Rolling Technology,University of Science , Technology Beijing,Beijing 100083,China |
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| Abstract: | The effects of friction on metallic rheology and mechanical parameters during plane strain compression were studied.Based on the 2-D and 3-D thermo-mechanical coupled finite element theory,the mechanical parameters,lateral spread and deformed metal flow pattern were calculated in different friction conditions by using MSC/Superform finite element software.The metallic deformation law was analyzed with pure aluminium at room temperature on a self-developed large specimen plane strain thermomechanical simulat... |
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| Keywords: | plane strain compression large specimen plane strain friction lateral spread inhomogeneous deformation |
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