Continuum model of abrasive layer in an abrasive wear test

被引:4
|
作者
Shao, Q [1 ]
机构
[1] Caterpillar Inc, Ctr Tech, Machine Res, Peoria, IL 61656 USA
关键词
abrasive layer; modeling; contact pressure;
D O I
10.1016/j.wear.2005.03.015
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In order to find out the relationship between driving torque and thickness of abrasive layer of a three-body abrasive wear system, a continuum model of abrasive layer was proposed. The model is based on the assumption of continuum of abrasive particles and a continuous contact pressure distribution was obtained. A sand crushing test was designed to act compressive behavior of the abrasive layer. The test was used to understand the loading-unloading-reloading behavior and the constitutive relationship between compressive displacement and compressive loading. The macro-contact pressure distribution of the abrasive wear between the cylinder-cylinder and cylinder-plane was obtained based on the sand compressive behavior. With the sand compressive behavior, an FEA model has been built for ring-on-ring abrasive wear test machine to simulate the normal contact pressure distribution and friction force. To verify the model, a set of experiments was conducted. Quartz sands were used as abrasives in the analysis and test. The measurement of torque accorded well with model prediction. With this model, only a simple sand crushing test is needed to obtain the relationship between driving torque and thickness of abrasive layer which is important for wear prediction of a three-body abrasive wear system. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:36 / 43
页数:8
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