Verification of nanometre-scale modelling of tribofilm sliding behaviour

Verification of nanometre-scale modelling of tribofilm sliding behaviour
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摩擦膜滑动行为纳米级建模的验证

DOI:
10.1016/j.triboint.2013.02.018
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发表时间:
2013
影响因子:
6.2
通讯作者:
X. Sun
X. Sun
中科院分区:
工程技术1区
文献类型:
--
作者:
W. Österle;A.I. Dmitriev;G. Orts-Gil;T. Schneider;H. Ren;X. Sun

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应用可移动元胞自动机模型研究了汽车制动过程中摩擦膜的滑动行为。由于目前还不可能定量确定真实的摩擦膜的组成,因此需要对建模结果进行最终验证。这是通过制备人造第三体来完成的,人造第三体的成分和纳米结构与建模所假设的相匹配。在将人造第三体应用于接触的同时进行销盘测试。结果表明,不仅第三机构的结构,而且还施加的正常压力的量确定的COF通过建模获得的和更好的实验和建模结果之间的相关性,同时假设在粗糙接触高的正常压力。
A model based on movable cellular automata has been applied to study the sliding behaviour of tribofilms formed during automotive braking. Since it is not possible yet to determine the composition of real tribofilms quantitatively, final verification of modelling results is needed. This was done by preparing artificial third bodies with compositions and nanostructures matching the ones assumed for modelling. Pin-on-disc tests were performed while applying the artificial third bodies to the contact. The results revealed that not only the structure of the third body but also the amount of the applied normal pressure determines the COF obtained by modelling and that much better correlation between experimental and modelling results was obtained while assuming high normal pressures at asperity contacts.
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