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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >CORRELATION BETWEEN STRUCTURAL CHANGES OF MATERIALS DURING FRICTION AND FINITE ELEMENT ANALYSIS
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CORRELATION BETWEEN STRUCTURAL CHANGES OF MATERIALS DURING FRICTION AND FINITE ELEMENT ANALYSIS

机译：摩擦过程中材料结构变化与有限元分析的相关性

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摘要

The Finite Element Method (FEM) is widely used for modeling strain distribution during friction contact. One of the necessary conditions for such modeling is the correspondence between structural changes in a material surface layers and Finite Element Analysis results. The present study is dedicated to the possibility of using FEM as a tool to predict structural changes of material surface layers during friction depending on material properties and friction conditions. Contact during friction with reciprocating and unidirectional sliding between two surfaces under condition of plane strain had been modeled using commercial Finite Element (FE) code. The correlation between FE results and structural results, obtaining by electron microscopy and X-ray, were studied for the primary and secondary running-in processes. An elastic-plastic model had been used to learn the influence of different contact parameters such as: pressure, hardening, friction coefficient and geometry of asperities on the FE modeling results. Correlation between the FEM predictions and structural results such as dislocation's density and distribution, were studied in a qualitative manner revealing that plastic strain results can be used to predict structural changes of material under sliding friction.
机译：有限元方法（FEM）被广泛用于模拟摩擦接触过程中的应变分布。这种建模的必要条件之一是材料表面层的结构变化与有限元分析结果之间的对应关系。本研究致力于使用有限元分析作为一种工具来预测摩擦过程中材料表面层的结构变化的可能性，具体取决于材料属性和摩擦条件。使用商业有限元（FE）代码对在平面应变条件下两个表面之间的往复运动和单向滑动之间的摩擦接触进行了建模。研究了一次和二次磨合过程的有限元结果与结构结果之间的相关性，这些结果是通过电子显微镜和X射线获得的。弹塑性模型已被用来学习不同接触参数的影响，例如：压力，硬化，摩擦系数和粗糙结构的几何形状对有限元建模结果的影响。定性研究了有限元预测与结构结果（例如位错的密度和分布）之间的相关性，揭示了塑性应变结果可用于预测滑动摩擦下材料的结构变化。

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