...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of non-linear mechanics >Effectiveness of mass-damper dynamic absorber on rocking block under one-sine pulse ground motion
【24h】

Effectiveness of mass-damper dynamic absorber on rocking block under one-sine pulse ground motion

机译：一正弦脉冲地面运动下减振器在减振器上的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper the effects of a mass-damper on the rocking motion of a rigid block, subject to one-sine pulse-type excitation, is investigated. The damper is modelled as a single-degree-of-freedom oscillating mass, running at the top of the block and connected to it by a linear visco-elastic device. In a previous paper by the same authors the effectiveness of the oscillating mass-damper was investigated on a block with fixed dimensions, by performing a parametric analysis where only the characteristics of the damper were changed. Instead, in this paper the variable parameters are those characterizing the block that has to be protected. The equations of rocking motion and the uplift and impact conditions are derived by means of a direct approach, capable of providing a deeper interpretation of the forces acting on the system. An extensive parametric analysis is performed by numerical integration of the governing equations and by taking the dimensions of the block, the frequency and the amplitude of the excitation, and the period of the oscillating mass as variable parameters. Curves capable of providing the amplitude of the excitation for which an overturning of the block occurs are obtained and the role of the variable parameters is pointed out. Finally, curves providing the threshold frequency of the one-sine excitation above which the mass-damper does not work well are obtained, depending on the parameters characterizing the block. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在本文中，研究了阻尼器对刚性块在单正弦脉冲型激励作用下的摇摆运动的影响。阻尼器被建模为单自由度的振动质量，它在模块的顶部运行，并通过线性粘弹性装置与其连接。在同一作者的先前论文中，通过执行仅改变阻尼器特性的参数分析，在固定尺寸的块上研究了振动质量阻尼器的有效性。取而代之的是，在本文中，可变参数是表征必须保护的块的参数。摇摆运动方程式以及上冲和冲击条件是通过直接方法导出的，能够对作用在系统上的力进行更深入的解释。通过对控制方程式进行数值积分并以块的尺寸，激励的频率和幅度以及振荡质量的周期作为变量参数，可以进行广泛的参数分析。获得能够提供激励幅度的曲线，针对该激励发生块的翻转，并指出了可变参数的作用。最终，根据块的特征参数，获得了提供单正弦激励阈值频率的曲线，超过该阈值，质量阻尼器将无法正常工作。 （C）2017 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号