Global stability effects of parametric excitation
Global stability effects of parametric excitation
复制标题
参数激励的全局稳定性效应
DOI:
10.1016/j.jsv.2019.02.014
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发表时间:
2019
影响因子:
4.7
通讯作者:
Peter Hagedorn
中科院分区:
文献类型:
--
作者:
Artem Karev;Peter Hagedorn
Stability investigations of general non-conservative parametrically excited systems with asynchronous excitation are presented. Focusing on the global stability effects outside of the traditional resonance areas, systems with two degrees of freedom are considered featuring displacement- and/or velocity-proportional parametric excitation with variable phase relations. In particular, facing the lack of studies on this subject, special attention is paid to time-periodic systems containing gyroscopic and circulatory terms. Through the application of the semi-analytical method of normal forms, general conditions for the appearance of possible global effects are derived. Apart from the “total instability” – presently the only known global effect – new stabilizing and destabilizing effects affecting the stability over the whole range of excitation frequencies are discovered. The derived conditions show, that such global effects are expected to be rather common in complex mechanical system, especially those, featuring circulatory terms. The qualitative analytical results are also confirmed by numerical stability analysis based onFloquettheory. As a mechanical example a minimal model of a squealing disk brake is examined. It is shown that this complex model is indeed subject to parametric excitation leading to global stability effects. These findings may contribute to a better understanding of the squealing phenomenon. Further, the newly obtained knowledge may as well be utilized for extended vibration suppression in mechanical systems in the context of parametric anti-resonance.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1007/bf00555659
发表时间:
1984
期刊:
Ingenieur-Archiv
影响因子:
--
作者:
N. Eicher
通讯作者:
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影响因子:
4.7
作者:
Artem Karev;Peter Hagedorn;Daniel Hochlenert
通讯作者:
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DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
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通讯作者:
P. Hagedorn