| 冷挤压塑性流体动力润滑分析 |
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| 引用本文： | 王雷刚,黄瑶,刘全坤.冷挤压塑性流体动力润滑分析[J].润滑与密封,2006(2):24-26,30. |
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| 作者姓名： | 王雷刚 黄瑶 刘全坤 |
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| 作者单位： | 1. 江苏大学材料科学与工程学院,江苏镇江,212013
2. 合肥工业大学材料科学与工程学院,安徽合肥,230009 |
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| 基金项目： | 中国科学院资助项目;安徽省自然科学基金;江苏大学校科研和教改项目 |
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| 摘 要： | 应用流体动力润滑理论和塑性成形原理，分析了冷挤压润滑过程。在挤压的起始和终止阶段为非稳态流体动力润滑，而中间阶段可近似为稳态流体动力润滑。考虑冷挤压在高压及大剪切应变率工况下润滑剂的非牛顿特性，运用Ostwald非牛顿体模型，分别建立了冷挤压非稳态和稳态的塑性流体动力润滑（PHD）模型。采用Monte Carlo法得到了冷挤压润滑过程的油膜厚度、油膜压力以及摩擦力的分布规律。
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| 关 键 词： | 冷挤压 非牛顿模型 塑性流体动力润滑 |
| 文章编号： | 0254-0150（2006）2-024-3 |
| 收稿时间： | 2005-03-14 |
| 修稿时间： | 2005-03-14 |
A Plasohydrodynamic Lubrication Analysis during Cold Extrusion |
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| Wang Leigang,Huang Yao,Liu Quankun.A Plasohydrodynamic Lubrication Analysis during Cold Extrusion[J].Lubrication Engineering,2006(2):24-26,30. |
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| Authors: | Wang Leigang Huang Yao Liu Quankun |
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| Affiliation: | 1. Jiangsu University, Zhenjiang Jiangsu 212013, China ; 2. Hefei University of Technology, Hefei Anhui 230009, China |
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| Abstract: | The process of hydrodynamic lubrication during cold extrusion was analyzed by means of theory of hydrodynamic lubrication and metal forming.The mechanism of lubrication was studied,which is unsteady and steady plastohydrodynamic lubrication.In the light of the non-Newtonian feature of lubricant under the condition of high pressure and large shearing strain ratio during the cold extrusion,the mathematics models of unsteady and steady plastohydrodynamic lubrication in cold extrusion were established respectively by Ostwald non-Newtonian model.The distribution of lubricant film thickness and stress during cold extrusion was calculated by Monte Carlo method. |
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| Keywords: | cold extrusion non-Newtonian model plastohydrodynamic lubrication |
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