不同接触尺度下PVA/HA复合水凝胶的滑动摩擦行为
采用UMT-II型多功能摩擦磨损试验机研究了不同接触尺度下PVA/HA复合水凝胶的滑动摩擦行为,并利用有限元模拟方法对PVA/HA复合水凝胶的滑动摩擦机理进行了探讨。结果表明：滑动过程中PVA/HA复合水凝胶的平均摩擦力、平均摩擦因数及变形深度随接触压头直径的增加逐渐减小,而随着接触载荷呈逐渐增加的趋势;随着接触压头直径的增加,液相的承载能力增大,从而平均摩擦力、变形深度减小;随着接触载荷的增加,液相流失增加,液相的承载力降低,从而平均摩擦力、变形深度增大。...
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| Published in | 材料工程 Vol. 44; no. 5; pp. 59 - 64 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学材料科学与工程学院,江苏徐州,221116
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 1001-4381 |
| DOI | 10.11868/j.issn.1001-4381.2016.05.010 |
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| Summary: | 采用UMT-II型多功能摩擦磨损试验机研究了不同接触尺度下PVA/HA复合水凝胶的滑动摩擦行为,并利用有限元模拟方法对PVA/HA复合水凝胶的滑动摩擦机理进行了探讨。结果表明：滑动过程中PVA/HA复合水凝胶的平均摩擦力、平均摩擦因数及变形深度随接触压头直径的增加逐渐减小,而随着接触载荷呈逐渐增加的趋势;随着接触压头直径的增加,液相的承载能力增大,从而平均摩擦力、变形深度减小;随着接触载荷的增加,液相流失增加,液相的承载力降低,从而平均摩擦力、变形深度增大。 |
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| Bibliography: | CUI Xiao-tong;LIU Jin-long;ZHANG De-kun;CHEN Kai;QI Jian-wei;School of Materials Science and Engineering,China University of Mining and Technology PVA/HA composite hydrogel; sliding friction; FEM; fluid load support 11-1800/TB UMT-II multi-functional friction and wear tester was used to investigate the sliding friction behavior of polyvinyl alcohol/hydroxyapatite（PVA/HA）composite hydrogel under different contac- ting scales, and the sliding friction mechanism of PVA/HA composite hydrogel was studied by finiteelement method （FEM）. The results show that in the process of the sliding friction, the average fric- tion, the average friction coefficient and the deformation depth of PVA/HA composite hydrogel de- crease gradually with the contacting diameter increasing, and exhibit an increase trend with the con- tacting load as the contact diameter increases, the fluid load support increases, then the average fric- tion and deformation depth decrease as the contact load increases, the loss of the liquid phase increa- se |
| ISSN: | 1001-4381 1001-4381 |
| DOI: | 10.11868/j.issn.1001-4381.2016.05.010 |