Fundamental Study of Momentum Exchange Impact Damper Using Pre-straining Spring Mechanism

IF 0.8 4区工程技术 Q4 ACOUSTICS

International Journal of Acoustics and Vibration Pub Date : 2017-12-01 DOI:10.20855/IJAV.2017.22.4487

L. Son, M. Bur, M. Rusli, H. Matsuhisa, Keisuke Yamada, H. Utsuno

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引用次数: 7

Abstract

A shock load occurred in a short time duration can lead to dangerous effect on the machine or structure. The use of conventional technique for shock vibration control by modifying the systems damping reduces the steady-state response of the system. However, this method fails to attenuate a large acceleration peak at the moment after the shock. An alternative method for reducing the maximum acceleration peak due to shock load using the principle of momentum exchange has been developed. When the shock excitation frequency is much larger in comparison with the main mass natural frequency, the passive momentum exchange impact damper(PMEID) produces good performance. However, the performance of PMEID decreases as the shock excitation frequency close to the main mass natural frequency. In this research, a simple technique to improve the performance of PMEID utilizing the pre-straining spring mechanism (PSMEID) is proposed. The dynamic model of the system with PSMEID is derived. Next, the simulation is conducted to evaluate the effectiveness of the proposed method.

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基于预紧弹簧机构的动量交换冲击阻尼器的基础研究

在短时间内发生的冲击载荷会对机器或结构造成危险的影响。传统的冲击振动控制方法是通过改变系统的阻尼来降低系统的稳态响应。然而，这种方法不能在冲击后的瞬间衰减一个大的加速度峰值。利用动量交换原理，提出了一种减少冲击载荷引起的最大加速度峰值的替代方法。当激波激励频率比主质量固有频率大得多时，被动动量交换冲击阻尼器(PMEID)具有良好的性能。当激波激振频率接近主质量固有频率时，PMEID的性能下降。在本研究中，提出了一种利用预应变弹簧机构(PMEID)来提高PMEID性能的简单技术。导出了带PSMEID的系统的动态模型。然后，通过仿真对所提方法的有效性进行了评价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Acoustics and Vibration ACOUSTICS-ENGINEERING, MECHANICAL

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

12 months

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