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材料研究学报  1997, Vol. 11 Issue (2): 131-136    
  研究论文 本期目录 | 过刊浏览 |
纳米液体润滑膜的分子动力学模拟──Ⅰ球型分子液体的模拟结果
胡元中;王慧;郭炎;邹鲲;郑林庆
清华大学摩擦学国家重点实验室;清华大学摩擦学国家重点实验室;清华大学摩擦学国家重点实验室;清华大学摩擦学国家重点实验室;清华大学摩擦学国家重点实验室
MOLECULAR DYNAMICS SIMULATION OF NANO-SCALE LIQUID LUBRICATING FILMS──Ⅰ.Simulation results for the fluid with spherical molecule
HU Yuanzhong; WANG Hui; GUO Yan; ZOU Kun; ZHENG Lin qing (The State Key Laboratory of Tribology; Tsinghua University; Beijing 100084)
引用本文:

胡元中;王慧;郭炎;邹鲲;郑林庆. 纳米液体润滑膜的分子动力学模拟──Ⅰ球型分子液体的模拟结果[J]. 材料研究学报, 1997, 11(2): 131-136.
, , , , . MOLECULAR DYNAMICS SIMULATION OF NANO-SCALE LIQUID LUBRICATING FILMS──Ⅰ.Simulation results for the fluid with spherical molecule[J]. Chin J Mater Res, 1997, 11(2): 131-136.

全文: PDF(612 KB)  
摘要: 固体表面间的润滑剂处于不同于体相液体的特殊约束状态.现以球型分子液体为模型对薄膜约束状态下润滑剂的性质进行分子动力学模拟结果表明,随着膜厚减薄,薄膜中液体等效粘度增加,固一液相变的临界压力减小,说明在纳米级薄膜中润滑剂可能在很低的压力下发生相变,从而表现出固体或类固体的性态在剪切响应方面,薄膜中润滑剂分子的松弛时间增加,在较低的剪切率下即出现剪切变稀现象,呈现明显的非牛顿性和粘弹性
关键词 分子动力学模拟约束流体球型分子薄膜流变特性    
Abstract:Molecular dynamics simulation of confined lubricant has been performed in a spherical molecule model. Results show that as film thickness diminishing, the effective viscosity increases and the critical pressure of solid--liquid transition decreases. The
Key wordsmolecular dynamics simulation confined liquid spherical molecule thin filmrheology
收稿日期: 1997-04-25     
基金资助:国家自然科学基金!59475035
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