Linear and nonlinear vibration absorbers are employed to achieve rapid and effective suppression of the induced vibration into structural dynamical systems to protect their structural integrity and to avoid human and economic losses. The majority of considered high performance vibration absorbers in the literature are still not capable to achieve complete vibration suppression during the first cycle of oscillation. However, the present study provides a new dynamical configuration of a nonlinear vibration absorber that acts as nonlinear energy sink (NES). The proposed configuration has achieved an immediate and complete supersession to the induced vibration into the linear oscillator (LO) during the first half-cycle of oscillation. This NES configuration is based on synergetic mechanism between different kinds of nonlinearities. It incorporates a synergy between the bistable NES, non-smooth vibro-impact NES and the rotational NES nonlinearities. Accordingly, it is named as vibro-impact inverted pendulum (VIIP) NES. It consists of a coupled inverted pendulum with the LO by torsional stiffness element and vibro-impact dynamics. By incorporating these three kinds of NESs nonlinearities in the proposed synergetic VIIP NES, the induced impulsive vibration is found to be completely suppressed during the first half-cycle of oscillation.

中文翻译：

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在振荡的前半个周期中通过非线性能量吸收进行快速振动抑制


采用线性和非线性减振器来快速有效地抑制结构动力系统中的感应振动，以保护其结构完整性并避免人员和经济损失。文献中大多数考虑的高性能减振器仍然无法在第一次振荡周期内实现完全的振动抑制。然而，本研究提供了一种非线性减振器的新动力学配置，该减振器充当非线性能量汇 （NES）。所提出的配置在振荡的前半个周期内实现了对感应振动到线性振荡器 （LO） 的即时和完全取代。这种 NES 配置基于不同种类非线性之间的协同机制。它结合了双稳态 NES、非光滑振动冲击 NES 和旋转 NES 非线性之间的协同作用。因此，它被命名为振动冲击倒摆 （VIIP） NES。它由一个耦合的倒立摆和通过扭转刚度单元和振动冲击动力学的 LO 组成。通过将这三种 NESs 非线性纳入所提出的协同 VIIP NES 中，发现在振荡的前半个周期中，感应脉冲振动被完全抑制。