Adaptive finite element simulation of wear evolution in radial sliding bearings
Adaptive finite element simulation of wear evolution in radial sliding bearings
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DOI：
10.1016/j.wear.2012.08.013
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发表时间：
2012-08-30
期刊：
影响因子：
5
通讯作者：
Degrieck, Joris
中科院分区：
文献类型：
--
作者：
Rezaei, Ali;Van Paepegem, Wim;Degrieck, Joris
本文采用自适应磨损建模方法研究了径向滑动轴承与转轴接触时的磨损过程。采用拉格朗日-欧拉混合公式模拟轴承与轴的接触情况，并用Archard方程模拟局部磨损演化过程。在所开发的磨损处理器算法中，不仅对接触单元执行重新划分网格，而且对其邻近单元执行网格重新划分。这样，磨损模拟变得与接触元件的大小无关。对一种叠层聚合物复合材料轴承进行了验证。复合材料被模拟为线性正交各向异性材料。磨损系数是通过平板实验获得的，并被用作磨损处理机中的压力和速度相关参数。最后，用数值方法研究了间隙对径向轴承磨损的影响。模拟还展示了接触压力在磨损过程中的演变，以及间隙对这种演变的影响。(C)2012爱思唯尔B.V.保留所有权利。
This article employs an adaptive wear modeling method to study the wear progress in radial sliding bearings contacting with a rotary shaft. Mixed Lagrangian-Eulerian formulation has been used to simulate the contact condition between the bearing and the shaft, and the local wear evolution is modeled using the Archard equation. In the developed wear processor algorithm, not only remeshing is performed on the contact elements, but also is executed for their proximity elements. In this way the wear simulation becomes independent of the size of the contact elements. Validation was done for a laminated polymeric composite bearing. The composite has been modeled as a linear orthotropic material. The wear coefficients were obtained from flat-on-flat experiments and were applied as pressure and velocity dependent parameters in the wear processor. Finally, the effect of the clearance on the wear of the radial bearings has been studied numerically. The simulations also demonstrate how the contact pressure evolves during the wear process, and how the clearance influences this evolution. (C) 2012 Elsevier B.V. All rights reserved.