论文标题
滑动接触中粗糙表面的粘合剂磨损过程的无参数机械模型
A parameter-free mechanistic model of the adhesive wear process of rough surfaces in sliding contact
论文作者
论文摘要
为了制定预测磨损法律，需要确定相关的材料参数及其对磨损速率的影响。尽管进行了数十年的研究，但对于磨损方程的数学形式，甚至最简单的模型，例如Archard的数学形式，都没有达成共识。在这里，我们提出了一个简单的模型，用于在干滑条件下没有包含拟合参数的粘合剂磨损，仅基于材料特性和表面参数。该模型将弹性塑料接触溶液与洞察力相连，即从滑动表面出现的体积脱离以磨损颗粒的形式发生，可以估计其最小尺寸。该模型的新颖性是对滑动过程的明确跟踪，这使我们能够将粒子发射速率和尺寸与宏观磨损速率连接起来。结果在定性上是有希望的，但是我们确定了更受控的磨损实验的必要性以及此类工作所需的参数，以便充分验证和改善我们的模型。
In order to develop predictive wear laws, relevant material parameters and their influence on the wear rate need to be identified. Despite decades of research, there is no agreement on the mathematical form of wear equations and even the simplest models, such as Archard's, contain unpredictable fit parameters. Here, we propose a simple model for adhesive wear in dry sliding conditions that contains no fit parameters and is only based on material properties and surface parameters. The model connects elastoplastic contact solutions with the insight that volume detachment from sliding surfaces occurs in the form of wear particles, the minimum size of which can be estimated. A novelty of the model is the explicit tracking of the sliding process, which allows us to meaningfully connect particle emission rates and sizes to the macroscopic wear rate. The results are qualitatively promising, but we identify the necessity for more controlled wear experiments and the parameters needed from such work in order to fully verify and improve our model.
