Some remarks on parametric excitation in circulatory systems

Some remarks on parametric excitation in circulatory systems
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关于循环系统参数激励的一些评论

DOI:
10.1002/pamm.201800061
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发表时间:
2018
期刊:
PAMM
影响因子:
--
通讯作者:
Peter Hagedorn
Peter Hagedorn
中科院分区:
--
文献类型:
--
作者:
Artem Karev;Lara De Broeck;Peter Hagedorn

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具有时间周期系数的动力系统,即具有参数激励的动力系统,已经在不同领域研究了一百多年。众所周知,参数激励的存在主要是不稳定的行为,导致不稳定区域的出现取决于激励的振幅和频率。然而,大多数工作都是在同步参数激励系统上完成的,而只有很少的论文涉及异相时间周期性。与此同时,在这方面几乎没有研究包含陀螺或循环项的系统。本文展示了具有非保守项的时间周期系统的稳定性评估的不同方法。特别是,在一个例子中考虑了异相参数激励和循环力,并对该例子进行了解析和数值处理。推导出的稳定性边界表明,这两个功能的相互作用导致发生,而意想不到的共振区。结果扩展了对参数激励影响的理解,并鼓励对更一般系统的研究。
Dynamical systems with time‐periodic coefficients, i.e. with parametric excitation, have been studied in different fields for over a hundred years. It is well known that the presence of parametric excitation acts mostly destabilizing, leading to the emergence of instability regions depending on the amplitude and frequency of excitation. However, most of the work is done on systems with synchronous parametric excitation, while there are only few papers dealing with out‐of‐phase time‐periodicity. At the same time little to no research in this context is done on systems containing gyroscopic or circulatory terms. The present paper demonstrates different approaches for stability assessment of time‐periodic systems featuring nonconservative terms. In particular, out‐of‐phase parametric excitation as well as circulatory forces are considered in an example which is treated analytically and numerically. The derived stability boundaries show that the interaction of both features leads to the occurrence of rather unexpected resonance areas. The results extend the understanding of the influence of parametric excitation and encourage study of more general systems.
Parameterresonanzen 1. und 2. Art bei Schwingungssystemen mit allgemeinen Harmonischen Erregermatrizen
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: N. Eicher
DOI: 10.1016/j.jsv.2018.05.003
发表时间: 2018
影响因子: 4.7
作者:
Artem Karev;Peter Hagedorn;Daniel Hochlenert
通讯作者: Daniel Hochlenert
DOI: --
发表时间: 2006
期刊: --
影响因子: --
作者:
Iroon Polytechniou-
通讯作者: Iroon Polytechniou-