| 基于改进型混合膜润滑模型的金属轧制过程的数值仿真 |
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| 引用本文： | 王桥医,谭建平. 基于改进型混合膜润滑模型的金属轧制过程的数值仿真[J]. 机械科学与技术, 2003, 22(3): 418-420,434 |
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| 作者姓名： | 王桥医 谭建平 |
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| 作者单位： | [1]株洲工学院，株洲412008 [2]中南大学机电工程学院，长沙410083 |
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| 基金项目： | 国家自然科学基金项目 ( 5 9775 0 41)资助 |
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| 摘 要： | 根据 Wilson和 Chang的粗糙度补偿模型和 Von Mises均匀变形模型 ,在轧制过程中 ,一种新的混合膜润滑模型被建立。一个更精确的平均雷诺方程被用来计算液体动压力。随变形而变化的屈服应力也在模型中被考虑。并编制了程序用来计算接触面积 ,膜厚和流体动压力。该模型使用较少的假设 ,且更切合实际 ,收敛快。它能应用于较宽速度范围的轧制状态
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| 关 键 词： | 混合膜 轧制 润滑 冷轧 |
| 文章编号： | 1003-8728(2003)03-0418-03 |
Numerical Simulation Based on a Modified Mixed-film Lubrication Model for Metal Rolling Processes |
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| WANG Qiao yi ,,TAN Jian ping. Numerical Simulation Based on a Modified Mixed-film Lubrication Model for Metal Rolling Processes[J]. Mechanical Science and Technology for Aerospace Engineering, 2003, 22(3): 418-420,434 |
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| Authors: | WANG Qiao yi TAN Jian ping |
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| Affiliation: | WANG Qiao yi 1,2,TAN Jian ping 1 |
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| Abstract: | An analytical model for metal rolling in the mixed lubrication regime is developed. The model is based on Wilson and Chang's asperity flattening model and Von Mises homogeneous deformation model. A more rigorous average Reynolds equation is used to calculate the hydrodynamic pressure. The variations of the yield stress with strain are considered in the model. An efficient iteration procedure is developed to solve the contact area, film thickness and hydrodynamic pressure. The model is more practical with fewer assumption and converges quickly. It is applicable to a wider range of rolling regimes. |
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| Keywords: | Mixed film Rolling Lubrication Cold rolling |
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