Global and local dynamics of drifting oscillator for different contact force models
Global and local dynamics of drifting oscillator for different contact force models
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DOI：
10.1016/j.ijnonlinmec.2009.11.017
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发表时间：
2010-11-01
影响因子：
3.2
通讯作者：
Akisanya, A. R.
中科院分区：
文献类型：
--
作者：
Ajibose, O. K.;Wiercigroch, M.;Akisanya, A. R.
准确描述两个碰撞固体之间的接触力在各种工程应用中是很重要的。本文研究了接触力模型对漂移振荡器整体和局部动力学的影响。本研究考虑了三种接触力模型，即Kelvin-Voigt （KV）模型、Hertz刚度（HS）模型和非线性接触刚度和阻尼（NSD）模型。系统的非线性分析表明，系统的局部和全局动力学行为取决于接触力模型的选择。三种模型对系统的短期（局部）动态响应几乎相同。然而，系统长期（全局）动力学的结果取决于接触力模型的选择：HS模型的结果与IN模型的拓扑结构相似，而NSD模型的相应结果与其他两种模型不同。2009爱思唯尔有限公司版权所有。
Accurate description of the contact force between two impacting solid bodies is important in various engineering applications. This paper examines the effects of contact force models on the global and local dynamics of a drifting oscillator. Three contact force models are considered in this study, namely the Kelvin-Voigt (KV), the Hertz stiffness (HS) and the non-linear contact stiffness and damping (NSD) models. The non-linear analysis of the considered system shows that the local and global dynamic behaviour depend on the choice of contact force model. The short-term (local) dynamic response for the system are almost identical for all the three models. However, results for the long-term (global) dynamics of the system depend on the choice of contact force model: while the results for HS model are topologically similar to those of the IN model, the corresponding results for NSD are different from the other two models. (C) 2009 Elsevier Ltd. All rights reserved.