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分块法研究圆柱绕流升阻力
引用本文:任勇生,刘立厚.分块法研究圆柱绕流升阻力[J].力学与实践,2004,26(1):0-0.
作者姓名:任勇生  刘立厚
作者单位:1. 太原理工大学机械电子工程研究所,太原,030024;上海工程技术大学基础教学学院,上海,200336
2. 太原理工大学机械电子工程研究所,太原,030024
摘    要: 使用新的分块耦合方法,分别对单圆柱和串列双圆柱绕流进行了数值 模拟. 对于单圆柱绕流,低$Re$下计算所得到的定常涡尺寸与实验非常接近. 对于 串列双圆柱绕流,研究分析了改变双圆柱中心间距对上下游圆柱的升阻力系数和脉动频率所 产生的影响,计算结果与实验非常吻合,为进一步研究涡致振动提供了依据.

关 键 词:圆柱绕流  串列双圆柱  

Advances in damping analysis and design of fiber reinforced composite material structures
REN Yongsheng LIU Lihou.Advances in damping analysis and design of fiber reinforced composite material structures[J].Mechanics and Engineering,2004,26(1):0-0.
Authors:REN Yongsheng LIU Lihou
Abstract:As fiber-reinforced composite are widely used as alternative of conventional materials in the constructions of supersonic airplane, marine, automobile, the knowledge in damping of composites is becoming more important for controlling the noise and vibration in the structures. In recent years the research on composite damping mechanisms and prediction methods have received extensive attention. This paper reviews recent achievements in damping studies for fiber-reinforced composites at both the macro-and micro-mechanical levels. The effects of some important factors such as fiber/matrix interface, interlaminar stresses, and transverse shear deformation on specific damping capacity of composites are also summarized. Finally, improvement and optimization for damping are introduced, and some recommendations regarding future research are prospected.
Keywords:fiber-reinforced composite  damping  micro-macro analysis  effect of complicate factor  improvement of damping  optimization
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