Studies of the performance of particle dampers under dynamic loads
Studies of the performance of particle dampers under dynamic loads
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动载荷下颗粒阻尼器的性能研究
DOI:
10.1016/j.jsv.2010.06.027
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发表时间:
2010-12
影响因子:
4.7
通讯作者:
Sami F. Masri
中科院分区:
文献类型:
--
作者:
Lu Zheng;Lu Zheng;Lu Xilin;Lu Xilin;Sami F. Masri;Sami F. Masri
This paper presents a systematic investigation of the performance of particle dampers (vertical and horizontal) attached to a primary system (single-degree-of-freedom (SDOF) and multi-degree-of-freedom (MDOF)) under different dynamic loads (free vibration, stationary random excitation as well as nonstationary random excitation, with single component or multi-component), and the optimum operating regions are all determined. The amount of dissipated energy due to impact and friction, and the concept of “Effective Momentum Exchange” are shown to be suitable “global” measures to interpret the physics involved in the behavior of particle dampers. Using the well-established discrete element method, the motion of vertical particle dampers can be analyzed and classified into three different regions, and the associated damping characteristics can be interpreted. The first mode of a MDOF primary system can be effectively controlled by a properly designed particle damper; however, the higher modes are more affected by other parameters. Consequently, extensive parametric studies are presented to evaluate the effects of various system parameters, such as: mass ratio, primary system damping, coefficient of restitution, container dimensions, excitation amplitude and components, input locations and damper locations.
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DOI:
10.1115/1.3422910
发表时间:
1973-03
期刊:
Journal of Applied Mechanics
影响因子:
--
作者:
S. Masri
通讯作者:
S. Masri
影响因子:
2.4
作者:
S. Masri;A. Ibrahim
通讯作者:
S. Masri;A. Ibrahim
影响因子:
4.7
作者:
C. Bapat;S. Sankar
通讯作者:
C. Bapat;S. Sankar
DOI:
10.1115/1.1688763
发表时间:
2004-04
期刊:
Journal of Vibration and Acoustics
影响因子:
--
作者:
Chengjun Wu;W. Liao;M. Wang
通讯作者:
Chengjun Wu;W. Liao;M. Wang
影响因子:
2.4
作者:
S. Masri
通讯作者:
S. Masri