论文标题

定期强迫非线性振荡器具有滞后阻尼

Periodically Forced Nonlinear Oscillators With Hysteretic Damping

论文作者

Bountis, Anastasios, Kaloudis, Konstantinos, Spitas, Christos

论文摘要

我们对由滞后阻尼下的周期性驱动的非线性,一维振荡器的动力学进行了详细的研究,该动力学最初是由Bishop在[1]中提出和分析的。我们首先在本构方程中添加一个小的二次刚度项,并通过系统的扰动方法构建问题的周期性解决方案,将瞬态项忽略为$ t \ rightarrow \ rightarrow \ infty $。然后,我们将分析重复以立方术语代替二次的分析,该术语不允许解决方案逃脱到无穷大。在这两种情况下,我们都会检查周期溶液对模型不同参数的幅度的依赖性,并与线性模型讨论差异。我们指出了解决方案的某些不良特征,这些特征在线性主教的模型中也被暗示了,但在非线性情况下也持续存在。最后,我们讨论了Reid [2]首先提出的替代性滞后振荡器模型,该模型似乎没有这些困难,并且在非线性方案中扩展时表现出非常丰富的动力学特性。

We perform a detailed study of the dynamics of a nonlinear, one-dimensional oscillator driven by a periodic force under hysteretic damping, whose linear version was originally proposed and analyzed by Bishop in [1]. We first add a small quadratic stiffness term in the constitutive equation and construct the periodic solution of the problem by a systematic perturbation method, neglecting transient terms as $t\rightarrow \infty$. We then repeat the analysis replacing the quadratic by a cubic term, which does not allow the solutions to escape to infinity. In both cases, we examine the dependence of the amplitude of the periodic solution on the different parameters of the model and discuss the differences with the linear model. We point out certain undesirable features of the solutions, which have also been alluded to in the literature for the linear Bishop's model, but persist in the nonlinear case as well. Finally, we discuss an alternative hysteretic damping oscillator model first proposed by Reid [2], which appears to be free from these difficulties and exhibits remarkably rich dynamical properties when extended in the nonlinear regime.

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