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Vibration suppression for truss core sandwich beam based on principle of nonlinear targeted energy transfer

机译：基于非线性目标能量传递原理的桁架芯夹芯梁振动抑制

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In this work, the dynamics of a truss core sandwich beam with NES (nonlinear energy sink) device are investigated. Based on the principle of nonlinear TET (targeted energy transfer), an NES device is placed in the interior of a sandwich beam to suppress vibration of the beam. The governing equation of motion for the sandwich beam with NES device attached is derived. The vibration responses of the system are analyzed under impulse and harmonic loads. Feasibility of the vibration suppression scheme is demonstrated by investigating the relation between the mass of the NES device and suppressing effect as well as the relative motion between the sandwich beam and the NES device. In addition, the influences of the NES parameters on the suppressing effect are studied. It is worth noting that the vibration suppression is enhanced with increasing the damping of NES when the system is excited by harmonic loads and with decreasing the damping when the system is excited by impulse loads. The influence of the nonlinear characteristic of spring on the vibration suppression depends on the selection of the other parameters of the NES. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在这项工作中，研究了带有NES（非线性能量吸收器）装置的桁架芯夹层梁的动力学。根据非线性TET（目标能量传递）原理，将NES设备放置在夹层梁的内部以抑制梁的振动。推导了附有NES装置的夹层梁的运动控制方程。分析了系统在脉冲和谐波负载下的振动响应。通过研究NES装置的质量与抑制效果之间的关系以及夹层梁与NES装置之间的相对运动，可以证明该振动抑制方案的可行性。另外，研究了NES参数对抑制效果的影响。值得注意的是，当系统由谐波负载激励时，通过增加NES的阻尼，而当系统由脉冲负载激励时，通过减小阻尼，可以增强振动抑制。弹簧的非线性特性对振动抑制的影响取决于NES其他参数的选择。 （C）2017 Elsevier Ltd.保留所有权利。

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