Modeling of Granular Particle Damping Using Multiphase Flow Theory of Gas-Particle
Modeling of Granular Particle Damping Using Multiphase Flow Theory of Gas-Particle
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DOI：
10.1115/1.1688763
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发表时间：
2004-04
期刊：
影响因子：
--
通讯作者：
Chengjun Wu;W. Liao;M. Wang
中科院分区：
文献类型：
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作者：
Chengjun Wu;W. Liao;M. Wang
基于气-颗粒多相流理论，建立了颗粒阻尼特性的理论模型。分别给出了等效粘性阻尼和库仑摩擦阻尼的阻力表达式。采用基于一阶近似的平均方法，分析了典型悬臂梁的非线性自由振动。数值结果也说明了粒子阻尼梁的一般特性。进行了实验验证，理论结果与实验数据具有良好的相关性，表明本文的理论工作是有效的。
A theoretical model based on multiphase flow theory of gas-particle is developed to evaluate the granular particle damping characteristics. Expressions for the drag forces of the equivalent viscous damping and the Coulomb friction damping are formulated respectively. The nonlinear free vibration of an exemplified cantilever particle-damping beam is analyzed by using the averaging method based on the first approximation. Numerical results are also presented to illustrate general characteristics of the particle-damping beam. An experimental verification is performed, and a good correlation between the theoretical results and the experimental data shows that the theoretical work in this paper is valid.